identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
F071C410EBAE59E0829D0B9E0EA6483E.text	F071C410EBAE59E0829D0B9E0EA6483E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium albui Jumbam & Aime	<div><p>Aureobasidium albui Jumbam &amp; Aime, Persoonia 54: 171 (2025)</p><p>Fig. 5</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 32–40 mm diam., surface flat, spreading, round with radiating, irregular margin, velvety, slimy, fluffy, yellowish white (2 A 2), paler at the margin; on MEA reaching 40–50 mm diam., spreading, round with radiating, irregular margin, velvety, slimy, grayish brown (7 F 3) at center, becoming yellowish brown (5 E 4) to smoke brown (4 E 2) and white at the margin; on OA 35–47 mm diam., surface flat, spreading with entire margin, velvety, fluffy, whitish gray, light gray at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.6 –) 3.5–7.5 (– 9.6) μm wide, mostly hyaline, branched, septate, smooth, thin-walled; become light brown to brown with age, constricted at the septa, thick-walled. Conidiogenous cells (4.4 –) 6.0–11.0 (– 16.2) × 2.5–5.4 (– 6.7) μm (x ̄ = 8.6 × 4.3 μm, n = 25), mostly undifferentiated, intercalary, rarely terminal, producing conidia percurrently from indistinct, short lateral denticles, or differentiated on hyaline hyphae, occasionally elongated, solitary, becoming light brown to dark brown with age. Conidia (4.3 –) 5.9–9.8 (– 13.6) × (2.3 –) 3.2–5.6 (– 7.0) μm (x ̄ = 8.0 × 4.4 μm, n = 180), fusoid, obovoid to ellipsoidal or occasionally elongate, hyaline to light brown, aseptate, guttulate, smooth-walled, becoming brown with age, budding occasionally observed. Chlamydospores (5 –) 6.5–9.5 (– 11.2) μm wide (x ̄ = 8.1 μm, n = 35), produced in aerial hyphae, mostly intercalary, solitary or in branched chains, subglobose to ellipsoidal, pigmented, light to dark brown, smooth-, thick-walled, septate, 1–2 cells, constricted near the septa. Endoconidia (3.7 –) 4.2–5.8 × 2.3–3.5 μm (x ̄ = 4.9 × 2.9 μm, n = 20), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Cardinal temperatures for growth.</p><p>Minimum 4 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 37 ° C.</p><p>Strain examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from white cheesewood flower ( Alstonia scholaris; Apocynaceae, Gentianales), Sep 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 866 .</p><p>Habitat and distribution.</p><p>Phylloplane of Cyrtomium falcatum and unidentified leaf in the USA (Jumbam et al. 2025); flowers of Alstonia scholaris in Thailand (this study).</p><p>Notes.</p><p>In the phylogenetic tree, strain SDBR-CMU 866 formed a well-supported clade with A. albui NRRL 61482 (ex-type), with 100 % MLBS and 1.0 BIPP support (Fig. 2). Morphologically, strain SDBR-CMU 866 is generally consistent with the type description of A. albui by Jumbam et al. (2025); however, detailed observations of some structures (e. g., conidiophores and conidiogenous cells) were not provided. Therefore, strain SDBR-CMU 866 was identified as A. albui, and an updated morphological description of the species is provided herein. Prior to this study, A. albui had been reported only from the leaf phylloplane in the USA (Jumbam et al. 2025). This study represents the first report of A. albui in Thailand.</p></div>	https://treatment.plazi.org/id/F071C410EBAE59E0829D0B9E0EA6483E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
6CC00DCEEC205DB2BA5E04B4820B8C9F.text	6CC00DCEEC205DB2BA5E04B4820B8C9F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium anthicola Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium anthicola Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 6</p><p>Etymology.</p><p>Refers to “ inhabiting flowers, ” the substrate from which this species was first isolated.</p><p>Type.</p><p>THAILAND • Phayao Province, Mueang District, isolated from bridal bouquet flower ( Plumeria pudica; Apocynaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40138 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 851 = GMBCC 2507 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 35–43 mm diam., surface flat, spreading, round with radiating margin, velvety, concentric, light gray (3 D 1) at center, pale orange (6 A 3), olive brown (4 E 5); on MEA reaching 30–37 mm diam., surface flat, spreading, round with radiating margin, velvety, brownish gray (4 E 2) to black, with olive brown at the margin; on OA 36–40 mm diam., surface flat, spreading with filiform, with entire margin, wrinkled, light gray (3 D 1) at center, pale orange (6 A 3) mixed with olive brown (4 E 5).</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (1.9 –) 2.9–7.7 (– 9) μm wide, hyaline to dark brown, branched, septate, smooth, thin-walled, becoming light brown to brown or golden brown with age, constricted at the septa. Conidiogenous cells (7.0 –) 9.1–14.0 (– 16.0) × 4.0–6.0 (– 8.9) μm (x ̄ = 11.4 × 6.2 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to dark brown in age, occasionally elongated, solitary. Conidia (4.2 –) 6.3–10.5 (– 13.0) × (2.5 –) 3.4–6.0 (– 8.0) μm (x ̄ = 8.3 × 4.2 μm, n = 200), obovoid to ellipsoidal, hyaline to light brown, aseptate, guttulate, smooth-walled, becoming light brown to brown with ages. Chlamydospores (5.7 –) 7.2–10.4 (– 12.3) μm wide (x ̄ = 8.7 μm, n = 45), produced in aerial hyphae, mostly intercalary, solitary or in branched chains, subglobose to ellipsoidal, pigmented, light to dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia (2.7 –) 3.6–6.0 (– 6.6) × 2.2–3.1 (– 3.7) μm (x ̄ = 4.8 × 2.8 μm, n = 40), ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate, succinate, citrate, ethanol, and xylitol are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light brown pigmentation was observed in salicin, D - glucono- 1, 5 - lactone, and D- glucuronate, while dark brown sediment formed in D - galactose, D - arabinose, sucrose, methyl- α - D - glucoside, raffinose, and D - gluconate.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from Fukien tea flower ( Ehretia microphylla; Boraginaceae, Boraginales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 821 .</p><p>Habitat and distribution.</p><p>Flowers of Ehretia microphylla and Plumeria pudica . Known only from northern Thailand.</p><p>Notes.</p><p>Based on the multilocus phylogenetic analyses, A. anthicola SDBR-CMU 821 and SDBR-CMU 851 (ex-type) formed a well-supported monophyletic lineage (100 % MLBS and 0.99 BIPP) that was sister to A. florigenum (Fig. 2). The rpb 2 and tef 1 sequences of A. anthicola differed from those of A. florigenum by 1.74 % (17 / 977 bp, including gaps) and 1.88 % (5 / 266 bp, including gaps), respectively. Additionally, the PHI test confirmed the genetic distinctiveness of A. anthicola and A. florigenum (Fig. 4). Morphologically, colonies of A. anthicola on OA differed from those of A. florigenum by having a pale orange mixed with olive-brown color, whereas A. florigenum produced yellowish-white colonies mixed with light gray and with a brownish-gray margin. Aureobasidium anthicola produced endoconidia, whereas A. florigenum did not. Based on physiological characteristics, A. anthicola differed from A. florigenum by producing light brown pigment when grown in salicin, D - glucono- 1, 5 - lactone, and D - glucuronate, which was not produced by A. florigenum . In addition, differences in sediment formation were observed during carbon assimilation (Table 1). Therefore, A. anthicola is introduced as a new species in the A. thailandense group.</p></div>	https://treatment.plazi.org/id/6CC00DCEEC205DB2BA5E04B4820B8C9F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
69BBB0AE28E7596DA228E1715A6371CD.text	69BBB0AE28E7596DA228E1715A6371CD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium bougainvilleae Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium bougainvilleae Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 7</p><p>Etymology.</p><p>Refers to the host genus Bougainvillea, from which this species was isolated.</p><p>Type.</p><p>THAILAND • Phayao Province, Mueang District, isolated from bougainvillea ( Bougainvillea hybrid; Nyctaginaceae, Caryophyllales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40141 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 858 = GMBCC 2509 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 56–60 mm diam., surface flat, spreading, round with radiating, irregular margin, velvety, grayish brown (6 E 3), with grayish yellow (4 B 6) at the margin; on MEA reaching 35–44 mm diam., surface flat, spreading, round with radiating, lobate margin, velvety, brownish gray (4 E 2), grayish brown (6 E 3), and black at the margin; on OA 62–67 mm diam., surface flat, spreading with filiform, entire margin, velvety, slimy, pale orange (6 A 3), with yellowish brown (5 E 8), light brown (6 D 4) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 3.0–11.0 (– 19.0) μm, hyaline to brown, branched, septate, smooth, thin-walled, becoming light to dark brown with age, constricted at the septa, thick-walled. Conidiogenous cells 5.0–15.0 (– 17.0) × 3.5–8.8 μm (x ̄ = 12.2 × 5.1 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, occasionally elongated, solitary, becoming brown with age. Conidia (3.8 –) 6.0–11.5 (– 13.5) × (2.5 –) 3.5–7.0 (– 9.4) μm (x ̄ = 8.7 × 4.7 μm, n = 180), obovoid to ellipsoidal, elongated, or globose to subglobose, hyaline becoming light to dark brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, smooth-walled, guttulate, budding occasionally observed. Chlamydospores (8.2 –) 10.1–16.0 (– 20.0) μm wide (x ̄ = 13.3 μm, n = 30), produced in aerial hyphae, mostly intercalary, solitary or in branched chains, globose to subglobose, pigmented, light to dark brown, smooth-, thick-walled, septate, 1–2 cells, constricted near the septa. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose (weak), maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid (weak), DL - lactate (weak), succinate, citrate (weak), ethanol, and xylitol are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light brown sediment formed in D - glucose, raffinose, and D - galacturonic acid, while dark brown sediment formed in N - acetylglucosamine, D - xylose, L - rhamnose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, myo - inositol, D - glucono- 1, 5 - lactone, citrate, and xylitol. Black sediment formed in D - galactose, L - sorbose, D - arabinose, glycerol, erythritol, D - mannitol, and D - gluconate.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from bougainvillea ( Bougainvillea hybrid; Nyctaginaceae, Caryophyllales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 859 .</p><p>Habitat and distribution.</p><p>Flowers of Bougainvillea hybrid . Known only from northern Thailand.</p><p>Notes.</p><p>Phylogenetic analyses showed that A. bougainvilleae strains SDBR-CMU 858 (ex-type) and SDBR-CMU 859 formed a distinct monophyletic lineage that was sister to A. catharanthi, with 77 % MLBS and 0.96 BIPP support (Fig. 2). The rpb 2, tef 1, and tub sequences of A. bougainvilleae differed from those of A. catharanthi by 4.96 % (47 / 948 bp, including gaps), 9.29 % (25 / 269 bp, including gaps), and 2.93 % (12 / 409 bp, including gaps), respectively. Morphologically, colonies of A. bougainvilleae on PDA, MEA, and OA were grayish brown with a grayish-yellow margin, brownish gray with a grayish-brown to black margin, and pale orange with a light brown margin, respectively. In contrast, colonies of A. catharanthi were olive brown with grayish-yellow margins on PDA, grayish yellow mixed with olive brown and with grayish-yellow margins on MEA, and light gray with dark gray margins on OA. Although the conidial size ranges of A. bougainvilleae and A. catharanthi overlapped, the conidia of A. bougainvilleae became brown at maturity, whereas those of A. catharanthi remained hyaline. Aureobasidium bougainvilleae can be distinguished from A. catharanthi by its ability to assimilate D - xylose, D - arabinose, L - rhamnose, maltose, α, α - trehalose, cellobiose, melibiose, lactose, raffinose, ribitol, D - mannitol, myo - inositol, D - glucuronate, succinate, and ethanol, with sediment formation observed during growth on these carbon sources (Table 1). Thus, A. bougainvilleae is described here as a new species based on phylogenetic analysis and morphological characteristics.</p></div>	https://treatment.plazi.org/id/69BBB0AE28E7596DA228E1715A6371CD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
F00F7A81EC1E538DB595DC9118244A5F.text	F00F7A81EC1E538DB595DC9118244A5F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium castaneae C. M. Tian & N. Jiang	<div><p>Aureobasidium castaneae C. M. Tian &amp; N. Jiang, Journal of Fungi 7 (1, no. 64): 11 (2021)</p><p>Fig. 8</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 34–45 mm diam., surface flat, spreading, round with radiating, irregular margin, velvety, slimy, pale yellow (2 A 3), becoming olive brown (4 E 5) at the margin; on MEA reaching 28–35 mm diam., surface flat, spreading, round with radiating, irregular margin, velvety, slimy, dark brown (6 F 8) at center, becoming olive brown (4 E 5) to smoke brown (4 E 2) and white at the margin; on OA 32–45 mm diam., surface flat, spreading with irregular margin, velvety, slimy, pale yellow (2 A 3), becoming brownish gray (4 E 2), yellowish brown (5 E 8) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 2.0–5.0 (– 6.6) μm wide, mostly hyaline, branched, septate, smooth, thin-walled, becoming light brown to brown, guttulate, thick-walled. Conidiogenous cells (4.8 –) 6.0–14.0 (– 16.0) × 2.5–6.0 (– 6.7) μm (x ̄ = 9.7 × 4.6 μm, n = 25), undifferentiated from hyphae, intercalary, rarely terminal, producing conidia percurrently from indistinct lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated from hyphae, occasionally elongated, solitary, erect to lightly curved, hyaline becoming lightly melanized with age. Conidia (4.3 –) 5.0–9.0 (– 11.0) × (2.5 –) 3.0–4.5 (– 5.6) μm (x ̄ = 7 × 3.7 μm, n = 150), obovoid to ellipsoid, globose to subglobose, hyaline, becoming light brown to brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled, budding occasionally observed. Endoconidia (2.9 –) 3.4–5.6 × 1.6–2.5 μm (x ̄ = 4.0 × 1.9 μm, n = 25), obovoid to ellipsoid, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Strains examined.</p><p>THAILAND • Chiang Mai, Mueang District, Suthep, isolated from American cassia flower ( Senna spectabilis; Fabaceae, Fabales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 835 .</p><p>Habitat and distribution.</p><p>Leaf spots of Castanea henryi in China (Jiang et al. 2021); flowers of Senna spectabilis in Thailand (this study).</p><p>Notes.</p><p>Phylogenetic analysis showed that strain SDBR-CMU 835 clustered with A. castaneae CFCC 54591 (ex-type) in the same clade, with strong statistical support (100 % MLBS and 0.97 BIPP) (Fig. 2). The LSU and ITS sequences of strain SDBR-CMU 835 showed 100 % similarity to those of A. castaneae CFCC 54591. The morphology of strain SDBR-CMU 835 is consistent with the description provided by Jiang et al. (2021). Therefore, this strain was identified as A. castaneae . In addition, an updated description of the melanized structures of the species is provided. Prior to this study, A. castaneae was reported on Castanea henryi in China (Jiang et al. 2021). This study represents the first report of A. castaneae in Thailand.</p></div>	https://treatment.plazi.org/id/F00F7A81EC1E538DB595DC9118244A5F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
968C2E1724E8555BAF250B87C2437EAB.text	968C2E1724E8555BAF250B87C2437EAB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium catharanthi Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium catharanthi Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 9</p><p>Etymology.</p><p>Refers to the host genus Catharanthus, from which this species was isolated.</p><p>Type.</p><p>THAILAND • Phayao Province, Mueang District, isolated from vinca flower ( Catharanthus roseus; Apocynaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40140 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 842 = GMBCC 2503 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 36–44 mm diam., surface flat, spreading, round with radiating margin, velvety, olive brown (4 E 6), with grayish yellow (4 B 6) at the margin; on MEA reaching 55–60 mm diam., surface flat, spreading with lobate margin, velvety, shiny, grayish yellow (4 B 6), with olive brown (4 E 5) mixed with grayish yellow (4 B 6) at the margin; on OA 60–68 mm diam., surface flat, spreading with filiform, entire margin, velvety, slimy, light gray (3 D 1), with dark gray (3 F 1) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (3.9 –) 5.0–10.0 (– 16.0) μm, hyaline to brown, branched, septate, smooth, thin-walled, becoming light brown to brown with age, constricted at the septa, thick-walled. Conidiogenous cells (6.8 –) 9.3–13.0 (– 20.1) × 4.0–6.0 μm (x ̄ = 10.2 × 5.3 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from short lateral denticles, or differentiated on hyphae, occasionally elongated, solitary, light brown to brown. Conidia obovoid to ellipsoidal, or subglobose, hyaline, aseptate, occasionally with an indistinct truncated base and a hilum, smooth-walled, guttulate, (5.4 –) 6.8–11.5 (– 14.2) × (3.3 –) 4–5.3 (– 6.4) μm (x ̄ = 8.9 × 4.7 μm, n = 150), budding occasionally observed. Chlamydospores (8.0 –) 9.5–14.8 (– 18.1) μm wide (x ̄ = 12.2 μm, n = 30), frequent produced in aerial hyphae, mostly intercalary, solitary or in branched chains, globose to subglobose, light to dark brown, smooth-, thick-walled, septate, 1–2 cells, constricted near the septa. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine (weak), ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside (weak), cellobiose, salicin (weak), melibiose, lactose (weak), raffinose, melizitose, glycerol (weak), erythritol (weak), ribitol (weak), glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone (weak), D - gluconate, D - glucuronate, D - galacturonic acid (weak), DL - lactate (weak), succinate (weak), citrate (weak), ethanol, and xylitol are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light brown sediment formed in D - glucose, D - galactose, L - sorbose, salicin, D - galacturonic acid, succinate, and citrate, while dark brown sediment formed in N - acetyl glucosamine, ribitol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, and xylitol. Black sediment formed in methyl- α - D - glucoside, glycerol, and erythritol, while white sediment observed in ethanol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from vinca flower ( Catharanthus roseus; Apocynaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 812 .</p><p>Habitat and distribution.</p><p>Flowers of Catharanthus roseus . Known only from northern Thailand.</p><p>Notes.</p><p>Phylogenetic analyses showed that A. catharanthi formed a distinct monophyletic lineage and was sister to A. bougainvilleae, with 77 % MLBS and 0.96 BIPP support (Fig. 2). The differences in sequence data, morphological characteristics, and physiological traits between A. catharanthi and A. bougainvilleae are described above. Therefore, A. catharanthi is introduced here as a new species.</p></div>	https://treatment.plazi.org/id/968C2E1724E8555BAF250B87C2437EAB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
1796FCCEA1E253AF9024DF2E4190AB69.text	1796FCCEA1E253AF9024DF2E4190AB69.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium chiangmaiense Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium chiangmaiense Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 10</p><p>Etymology.</p><p>Refers to Chaing Mai Province, where the flowers containing the new fungus were collected.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from oleander flower ( Nerium oleander; Apocynaceae, Gentianales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40129 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 819 = GMBCC 2497 = TBRC 21780 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 50–55 mm diam., surface round with slightly raised, filiform margin, velvety, white to orange gray (5 B 2), with light gray (3 D 1) at the margin; on MEA reaching 40–46 mm diam., surface flat, spreading with entire, filiform margin, velvety, grayish orange (6 B 5), with white to light gray (3 D 1) at the margin; on OA 42–47 mm diam., surface flat, woolly, spreading with filiform, entire margin, light gray (3 D 1) to brownish gray (4 E 2), with light gray (3 D 1) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 3.0–7.0 (– 8.8) μm wide, hyaline to brown, branched, septate, smooth, thin-walled, getting darker and thicker with age, light brown to brown, constricted at the septa, guttulate. Conidiogenous cells 9–10.5 (– 12.5) × 4.2–7.6 μm (x ̄ = 10.2 × 6.0 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to light brown. Conidia obovoid to ellipsoidal, fusoid, or subglobose, hyaline to light brown, becoming brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, smooth-walled, guttulate, (3.8 –) 5.2–7.9 (– 11.7) × (2.0 –) 2.8–5.0 (– 8.1) μm (x ̄ = 6.7 × 3.8 μm, n = 160), budding occasionally observed. Chlamydospores (5.5 –) 7–9 (– 11.5) (x ̄ = 8.1 μm, n = 25) µm wide, produced in aerial hyphae, mostly intercalary, in branched chains, globose to subglobose, light to dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose (weak), xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin (weak), melibiose (weak), lactose, raffinose (weak), melizitose, inulin (weak), glycerol, erythritol (weak), ribitol, glucitol, mannitol, galactitol, myo - inositol (weak), D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, succinate, citrate, ethanol (weak), and xylitol (weak) are assimilated, but soluble starch, DL - lactate, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light brown sediment formed in D - glucose, D - galactose, N - acetyl glucosamine, α - α - trehalose, cellobiose, melibiose, melizitose, and glycerol, while dark brown sediment formed in D - xylose, salicin, raffinose, and D - glucono- 1, 5 - lactone. Black sediment formed in erythritol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from Persian gentian flower ( Exacum affine; Gentianaceae, Gentianales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 818 .</p><p>Habitat and distribution.</p><p>Flowers of Exacum affine and Nerium oleander . Known only from northern Thailand.</p><p>Notes.</p><p>In the multilocus phylogenetic analyses, A. chiangmaiense SDBR-CMU 818 and SDBR-CMU 819 (ex-type) formed a distinct monophyletic lineage (100 % MLBS and 1.00 BIPP) that was sister to A. musti and A. zhengzhenxiangiae (Fig. 2). The rpb 2 sequences of A. chiangmaiense showed 98.01 % similarity to that of A. musti MCA 7652, differing by 1.99 % (18 / 906 bp, including gaps), and 96.33 % similarity to that of A. zhengzhenxiangiae BRIP 76360 a, differing by 3.67 % (23 / 627 bp, including gaps). The sequences of A. chiangmaiense differed from those of A. musti SDBR-CMU 825 and SDBR-CMU 864 obtained in this study by 3.92 % in rpb 2 (40 / 1,020 bp, including gaps), 9.38 % in tef 1 (21 / 224 bp, including gaps), and 6.60 % in tub (27 / 409 bp, including gaps). However, A. chiangmaiense is distinguishable from A. musti based on differences in colony characteristics. Colonies of A. chiangmaiense are white to orange gray with a light gray margin on PDA and grayish orange with a white to light gray margin on MEA, whereas A. musti forms reddish to purple colonies on PDA and yellow to orange colonies on MEA (Jumbam et al. 2025; this study). Moreover, A. chiangmaiense did not grow at 4 ° C or 37 ° C, whereas A. musti was able to grow at both temperatures. The conidia of A. chiangmaiense are wider (2.0–8.1 µm) than those of A. musti (0.5–4.8 µm) (Jumbam et al. 2025; this study). Nevertheless, morphological and colony comparisons with the type strain of A. zhengzhenxiangiae could not be made owing to the absence of available data (Tan et al. 2026 b). Furthermore, the PHI test confirmed the genetic distinctiveness of A. chiangmaiense, A. musti, and A. zhengzhenxiangiae (Fig. 3). Aureobasidium chiangmaiense can be distinguished from A. musti by its ability to assimilate L - sorbose, D - arabinose, L - rhamnose, salicin, glycerol, erythritol, ribitol, D - mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, succinate, ethanol, and xylitol (Jumbam et al. 2025). In addition, A. chiangmaiense differs from A. musti in its inability to assimilate potassium nitrate and sodium nitrite and its ability to assimilate creatine, whereas A. musti can assimilate potassium nitrate and sodium nitrite but not creatine (Jumbam et al. 2025). Based on the combined morphological, physiological, and molecular evidence, A. chiangmaiense is described herein as a new species.</p></div>	https://treatment.plazi.org/id/1796FCCEA1E253AF9024DF2E4190AB69	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
A2B49BBB9E2058B3A41381F119CA88CA.text	A2B49BBB9E2058B3A41381F119CA88CA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium florale Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium florale Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 11</p><p>Etymology.</p><p>Refers to its association with flowers, the substrate from which this species was isolated.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from teak flower ( Tectona grandis; Lamiaceae, Lamiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40136 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 832 = GMBCC 2501 = TBRC 21781 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 35–42 mm diam., surface flat, spreading with filiform, irregular margin, velvety, slimy, yellowish white (2 A 2); on MEA reaching 33–40 mm diam., surface flat, spreading with filiform, irregular margin, velvety, slimy, orange white (5 A 2); on OA 36–40 mm diam., surface flat, spreading with filiform, irregular margin, velvety, slimy, yellowish white (2 A 2) at center, light gray (3 D 1) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2 –) 3.8–8.6 (– 14.9) μm wide, hyaline to dark brown, getting darker and thicker with age, branched, septate, smooth. Conidiogenous cells (7.5 –) 8.6–10.5 (– 12.5) × (5.5 –) 6.2–7.6 μm (x ̄ = 11.1 × 7.8 μm, n = 20), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to light brown, occasionally elongated, solitary, becoming brown to dark brown with age. Conidia (3.8 –) 5.7–10.4 (– 13.6) × (2.6 –) 4–5.6 (– 7) μm (x ̄ = 7.8 × 4.8 μm, n = 200), obovoid to ellipsoidal, elongated, or globose to subglobose, hyaline becoming melanized with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled, budding occasionally observed. Chlamydospores 6.0–9.5 (– 13.6) (x ̄ = 8.5 μm, n = 25) µm wide, produced in aerial hyphae, intercalary, solitary or in branched chains, subglobose, pigmented, dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia (3.7 –) 4.3–5.4 (– 6) × 2.7–3.6 (– 4.5) μm (x ̄ = 4.8 × 3.3 μm, n = 25), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose (weak), N - acetyl glucosamine, ribose (weak), xylose, L - arabinose (weak), D - arabinose (weak), L - rhamnose, sucrose, maltose, α - α - trehalose (weak), methyl- α - D - glucoside (weak), cellobiose, salicin (weak), melibiose, lactose (weak), raffinose, melizitose, glycerol (weak), erythritol (weak), ribitol (weak), glucitol (weak), mannitol (weak), galactitol (weak), myo - inositol (weak), D - glucono- 1, 5 - lactone (weak), D - gluconate (weak), D - glucuronate (weak), D - galacturonic acid (weak), succinate (weak), citrate, ethanol (weak), and xylitol (weak) are assimilated, but inulin, soluble starch, DL - lactate, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light brown sediment formed in D - glucose, D - galactose, L - sorbose, N - acetyl glucosamine, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, erythritol, ribitol, D - glucitol, D - mannitol, myo - Inositol, D - glucuronate, D - galacturonic acid, succinate, citrate, and ethanol. Black sediment formed in D - ribose, D - xylose, L - arabinose, methyl- α - D - glucoside, glycerol, galactitol, D - glucono- 1, 5 - lactone, D - gluconate, and xylitol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from teak flower ( Tectona grandis; Lamiaceae, Lamiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 830; living culture = SDBR-CMU 831 ; peregrina flower ( Jatropha integerrima; Euphorbiaceae, Malpighiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 840; SDBR-CMU 850 ; Chang Phueak, isolated from daisy flower ( Thymophylla tenuiloba; Asteraceae, Asterales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 862 .</p><p>Habitat and distribution.</p><p>Flowers of Jatropha integerrima, Tectona grandis, and Thymophylla tenuiloba . Known only from northern Thailand.</p><p>Notes.</p><p>The multilocus phylogenetic tree showed that A. florale SDBR-CMU 830, SDBR-CMU 831, SDBR-CMU 832 (ex-type), SDBR-CMU 840, SDBR-CMU 850, and SDBR-CMU 862 formed a well-supported monophyletic lineage (99 % MLBS and 0.98 BIPP) that was sister to A. albui, A. castaneae, A. floricola, and A. lannaense (Fig. 2). Additionally, the PHI test results (Fig. 4) indicated significant genetic differentiation, supporting the recognition of A. florale as a distinct species from A. albui, A. castaneae, A. floricola, and A. lannaense . Morphologically, colonies of A. florale on MEA are orange white, clearly differing from the grayish-brown colonies of A. albui, the olive-brown colonies of A. castaneae, the olive-brown to black colonies with a yellowish-white margin of A. floricola, and the yellowish-white and dark-gray to black colonies of A. lannaense . Although the micromorphology of A. florale is similar to that of A. albui, A. castaneae, A. floricola, and A. lannaense, these taxa can be distinguished based on multilocus phylogenetic analyses. Moreover, A. florale differs from A. lannaense by the presence of endoconidia. Furthermore, A. florale can be distinguished from A. floricola and A. lannaense by its inability to assimilate DL - lactate (Table 1). It also differs from A. floricola in its ability to assimilate methyl-α- D - glucoside. In addition, A. florale differs from A. albui in its ability to assimilate D - arabinose, L - rhamnose, salicin, glycerol, erythritol, ribitol, myo - inositol, ethanol, xylitol, and creatine (Jumbam et al. 2025). Moreover, A. florale did not produce pigmentation when grown in L - sorbose, erythritol, D - mannitol, or D - glucono- 1, 5 - lactone, whereas A. albui produced pigmentation (Jumbam et al. 2025). Hence, A. florale is introduced as a new species based on both morphological characteristics and molecular data.</p></div>	https://treatment.plazi.org/id/A2B49BBB9E2058B3A41381F119CA88CA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
AC98C17B802A598E8220222CFFB32BB6.text	AC98C17B802A598E8220222CFFB32BB6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium floricola Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium floricola Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 12</p><p>Etymology.</p><p>Refers to its association with flowers, the substrate from which this species was isolated.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from kumquat flower ( Citrus japonica; Rutaceae, Sapindales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40130 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 829 = GMBCC 2500 = TBRC 21782 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 30–40 mm diam., surface flat, spreading, round with radiating margin, wrinkled, orange white (5 A 2), olive brown (4 E 5: tabby appearance), yellowish white (2 A 2) at margin; on MEA reaching 30–39 mm diam., surface flat, spreading, round with radiating margin, dry, velvety, olive brown (4 E 5) to black, yellowish white (2 A 2) at margin; on OA 26–34 mm diam., surface flat, spreading with irregular margin, yellowish white (2 A 2), orange white (5 A 2: tabby appearance).</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 2.7–7.5 (– 9.0) μm wide, hyaline to brown, branched, septate, smooth, thin-walled, becoming golden brown or dark brown, constricted at the septa, getting darker and thicker with age. Conidiogenous cells (4.0 –) 5.6–8.8 (14.0) × (2.6 –) 3.5–6.1 μm (x ̄ = 7.2 × 4.2 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to dark brown. Conidia (4.8 –) 7.3–11.0 (– 12.8) × (2.4 –) 3–7.1 μm (x ̄ = 8.9 × 4.7 μm, n = 200), obovoid to ellipsoidal, elongate, or subglobose, hyaline to light brown, becoming dark brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled. Chlamydospores (4.5 –) 7.5–16.7 (– 19.0) (x ̄ = 12.3 μm, n = 40) µm wide, produced in aerial hyphae, intercalary, in branched chains, subglobose to ellipsoidal, hyaline becoming light to dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia (3.9 –) 4.7–7.9 × 1.85–3.0 (– 3.7) μm (x ̄ = 6.0 × 2.7 μm, n = 27), obovoid to ellipsoidal, elongate, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose (weak), L - rhamnose, sucrose, maltose, α - α - trehalose, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate (weak), succinate, citrate, ethanol, and xylitol are assimilated, but methyl- α - D - glucoside, inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, dark brown sediment formed in D - glucose, D - galactose, L - sorbose, N - acetyl glucosamine, L - rhamnose, maltose, α - α - trehalose, salicin, glycerol, myo - inositol, D - glucuronate, D - galacturonic acid, DL - lactate, and citrate. Black sediment formed in cellobiose, erythritol, D - glucono- 1, 5 - lactone, D - gluconate, and succinate, while white sediment observed in L - arabinose.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from Egyptian star cluster flower ( Pentas lanceolata; Rubiaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 853 .</p><p>Habitat and distribution.</p><p>Flowers of Citrus japonica and Pentas lanceolata . Known only from northern Thailand.</p><p>Notes.</p><p>In the multilocus phylogenetic tree, A. floricola SDBR-CMU 829 (ex-type) and SDBR-CMU 853 clustered with A. albui SA 57 and formed a distinct lineage separate from the clade of A. albui NRRL 61482 and SDBR-CMU 866 (Fig. 2). The ITS, LSU, and rpb 2 sequences of A. floricola were identical (100 %) to those of A. albui SA 57; however, the ITS, LSU, and rpb 2 sequences showed 100 %, 97.90 %, and 96.97 % similarity, respectively, to those of A. albui NRRL 61482 (ex-type), differing by 3.03 % in rpb 2 (18 / 594 bp, including gaps). Additionally, the ITS, LSU, rpb 2, tef 1, and tub sequences of A. floricola showed 100 %, 100 %, 96.70 %, 99.64 %, and 100 % similarity, respectively, to those of A. albui SDBR-CMU 866 obtained in this study, differing by 3.30 % in rpb 2 (31 / 939 bp, including gaps). However, further analyses of morphological characteristics, growth temperature profiles, and additional genetic loci are required to determine whether A. albui SA 57 represents the same species as A. floricola or a distinct species, warranting further investigation in future studies. Aureobasidium floricola shares micromorphological features similar to those of A. albui; however, it is readily distinguished by its distinct colony morphology. Colonies of A. floricola are orange white to olive brown with a yellowish-white margin on PDA, olive brown to black with a yellowish-white margin on MEA, and yellowish white mixed with orange white on OA, whereas A. albui forms white to pale yellow colonies on PDA, greenish-brown to dark-brown colonies on MEA, and whitish-gray colonies on OA (Jumbam et al. 2025; this study). Furthermore, the PHI test revealed no significant genetic recombination between A. floricola and A. albui (Fig. 4), indicating that they represent distinct species. However, A. floricola differs from A. albui in its ability to assimilate D - arabinose, L - rhamnose, salicin, glycerol, erythritol, ribitol, myo - inositol, ethanol, xylitol, and creatine, while being unable to utilize potassium nitrate or sodium nitrite (Jumbam et al. 2025). Furthermore, A. albui produced pigmentation when grown on L - sorbose, erythritol, D - mannitol, or D - glucono- 1, 5 - lactone, whereas A. floricola did not (Jumbam et al. 2025). Therefore, A. floricola is described herein as a new species.</p></div>	https://treatment.plazi.org/id/AC98C17B802A598E8220222CFFB32BB6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
70ACB1302EB45CB1A0D3D62CA83D34B8.text	70ACB1302EB45CB1A0D3D62CA83D34B8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium florigenum Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium florigenum Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 13</p><p>Etymology.</p><p>Refers to its origin from flowers, from which this species was isolated.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from marigold flower ( Tagetes erecta; Asteraceae, Asterales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40137 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 865 = GMBCC 2512 = TBRC 21783 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 35–50 mm diam., surface flat, spreading, round with radiating margin, velvety, dry, gray (5 C 1) at center, orange white (5 A 2), olive brown (4 E 5: tabby appearance); on MEA reaching 30–42 mm diam., surface flat, spreading, round with radiating margin, wrinkled, velvety, black, olive brown (4 E 5: tabby appearance); on OA 37–49 mm diam., surface flat, spreading with irregular margin, yellowish white (2 A 2), light gray (2 B 1: tabby appearance), with brownish gray (4 E 2) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.7 –) 4.0–6.3 (– 10.0) μm wide, hyaline to brown, branched, septate, smooth, thin-walled, getting darker and thicker with age, constricted at the septa. Conidiophore-like structure differentiated on hyphae, (5.0 –) 7.0–10 (– 12.3) μm wide, hyaline to dark brown, branched, septate, smooth, thin-walled. Conidiogenous cells (5.0 –) 8.0–14.0 × 2.2–4.7 (– 5.8) μm (x ̄ = 10.1 × 4.1 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline becoming dark brown with age. Conidia ellipsoidal to dumbbell shaped, hyaline, becoming light to dark brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, smooth-walled, guttulate, (4.1 –) 6.3–13.0 (– 19.2) × (2.2 –) 3.4–6.3 (– 10) μm (x ̄ = 9.1 × 4.8 μm, n = 300). Chlamydospores (7.4 –) 10.5–17.0 (x ̄ = 13.0 μm, n = 25) µm wide, produced in aerial hyphae, mostly intercalary, solitary or in branched chains, subglobose to ellipsoidal, dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia (4.5 –) 5.2–8.0 (– 9.3) × (3.2 –) 3.5–4.3 (– 4.9) μm (x ̄ = 6.7 × 4.1 μm, n = 25), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate (weak), D - glucuronate, D - galacturonic acid, DL - lactate, succinate, citrate, ethanol, and xylitol are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, dark brown sediment formed in D - glucose, methyl- α - D - glucoside, erythritol, myo - inositol, and D - glucuronate. Black sediment formed in L - sorbose, D - gluconate, and ethanol, while white sediment observed in D - galactose, D - ribose, D - xylose, L - arabinose, L - rhamnose, and galactitol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from yellow elder flower ( Tecoma stans; Bignoniaceae, Lamiales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 828 .</p><p>Habitat and distribution.</p><p>Flowers of Tagetes erecta and Tecoma stans . Known only from northern Thailand.</p><p>Notes.</p><p>Phylogenetically, A. florigenum SDBR-CMU 865 (ex-type) and SDBR-CMU 828 formed a well-supported monophyletic lineage (100 % MLBS and 0.99 BIPP) that was sister to A. anthicola (Fig. 2). Furthermore, the PHI test confirmed the genetic distinctiveness of A. florigenum and A. anthicola (Fig. 4). The molecular, morphological, and physiological differences between A. florigenum and A. anthicola are described above. Therefore, A. florigenum is described herein as a new species.</p></div>	https://treatment.plazi.org/id/70ACB1302EB45CB1A0D3D62CA83D34B8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
8759B758E030501F8B7B0689D3357E3F.text	8759B758E030501F8B7B0689D3357E3F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium kwanphayaoense Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium kwanphayaoense Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 14</p><p>Etymology.</p><p>Refers to Kwan Phayao (Phayao Lake) in Mueang Phayao District, Phayao Province, Thailand, where the flowers containing the new fungus were collected.</p><p>Type.</p><p>THAILAND • Phayao Province, Mueang District, isolated from chaya spinach flower ( Cnidoscolus aconitifolius; Euphorbiaceae, Malpighiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40139 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 849 = GMBCC 2506 = TBRC 21784 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 28–30 mm diam., surface flat, spreading, round with radiating margin, velvety, slimy, yellowish white (2 A 2); on MEA reaching 40–48 mm diam., surface flat, spreading, round with radiating margin, velvety, orange gray (5 B 2) at center, grayish brown (7 E 3) at the margin; on OA 42–47 mm diam., surface flat, spreading with filiform, entire margin, powdery, fluffy, light gray (3 D 1).</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 2.8–7.2 (– 9.0) μm wide, hyaline to dark brown, branched, septate, smooth, thin-walled, getting darker and thicker with age, constricted at the septa. Conidiogenous cells 10.0–11.7 × 3.0–3.8 μm (x ̄ = 11 × 3.8 μm, n = 25), undifferentiated, intercalary, rarely terminal, producing conidia percurrently from short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline, becoming dark brown. Conidia obovoid to ellipsoidal, elongated, or globose to subglobose, hyaline to brown, becoming dark brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled, (4.0 –) 5.8–11.0 (– 14.2) × 2.0–4.4 (– 7.0) μm (x ̄ = 8.4 × 3.5 μm, n = 150). Chlamydospores (6.0 –) 7.0–14.5 (– 17.6) (x ̄ = 8.9 μm, n = 25) µm wide, produced in aerial hyphae, mostly intercalary, solitary or in branched chains, globose to subglobose, dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate, succinate, citrate, ethanol, and xylitol are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, dark brown sediment formed in L-sorbose, salicin, erythritol. Black sediment formed in D - glucose, D - arabinose, methyl- α - D - glucoside, raffinose, glycerol, D - glucitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, and ethanol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District isolated from peregrina flower ( Jatropha integerrima; Euphorbiaceae, Malpighiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 839 ; isolated from holy basil flower ( Ocimum tenuiflorum; Lamiaceae; Lamiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 844 ; isolated from purslane flower ( Portulaca grandiflora; Portulacaceae, Caryophyllales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 860 .</p><p>Habitat and distribution.</p><p>Flowers of Cnidoscolus aconitifolius, Jatropha integerrima, Ocimum tenuiflorum, and Portulaca grandiflora . Known only from northern Thailand.</p><p>Notes.</p><p>The multilocus phylogenetic tree (Fig. 2) showed that A. kwanphayaoense formed a distinct clade, supported by 100 % MLBS and 1.0 BIPP, and was separated from other Aureobasidium species in the A. thailandense group. Aureobasidium kwanphayaoense formed a sister clade to A. albui, A. anthicola, A. castaneae, A. florale, A. floricola, A. florigenum, A. lannaense, and A. vanuatuense . Morphologically, the colony characteristics of A. kwanphayaoense differed from those of most phylogenetically related sister taxa but were similar to those of A. albui, A. florale, and A. lannaense . However, endoconidia are absent in A. kwanphayaoense, whereas they are present in A. albui and A. florale . In addition, A. kwanphayaoense can be distinguished from these taxa based on multilocus phylogenetic analyses and nucleotide differences in the rpb 2 and tef 1 loci (Table 2). Moreover, the results of the PHI test further supported the genetic distinctiveness of A. kwanphayaoense within the A. thailandense group (Fig. 4). Furthermore, A. kwanphayaoense can be distinguished from A. anthicola, A. florale, A. floricola, A. lannaense, and A. florigenum by its characteristic pattern of sediment formation in carbon assimilation tests (Table 1). Aureobasidium kwanphayaoense can be distinguished from A. anthicola by the absence of pigmentation on salicin, D - glucono- 1, 5 - lactone, and D - gluconate, which is characteristic of A. anthicola (Table 1). In addition, A. kwanphayaoense also differs from A. floricola in its ability to assimilate methyl-α- D - glucoside. Aureobasidium albui and A. vanuatuense are clearly separated from A. kwanphayaoense by their inability to assimilate L - arabinose, L - rhamnose, salicin, glycerol, ribitol, myo - inositol, ethanol, and xylitol as carbon sources, as well as creatine as a nitrogen source (Jumbam et al. 2025). Based on the combined morphological, physiological, and molecular evidence, A. kwanphayaoense is described herein as a new species.</p><p>“ – ” indicates no result due to unavailable sequence data.</p></div>	https://treatment.plazi.org/id/8759B758E030501F8B7B0689D3357E3F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
0ABD8DE0E9875569B8E13907BABE4BB8.text	0ABD8DE0E9875569B8E13907BABE4BB8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium lannaense Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium lannaense Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 15</p><p>Etymology.</p><p>Refers to the Kingdom of Lanna, the historic name of northern Thailand, where the flowers containing the new fungus were collected.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from flosreginae flower ( Lagerstroemia speciosa; Lythraceae, Myrtales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40135 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 863 = GMBCC 2511 = TBRC 21785 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 25–28 mm diam., surface flat, spreading with filiform, irregular margin, velvety, fluffy, slimy, yellowish white (2 A 2); on MEA reaching 45–54 mm diam., surface flat, spreading, round with radiating margin, velvety, yellowish white (2 A 2), dark gray (3 F 1) to black (tabby appearance); on OA 42–47 mm diam., surface flat, spreading with irregular margin, powdery, light gray (4 D 1) and olive brown (4 E 5: tabby appearance), with light gray (4 D 1) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 3.0–10.0 (– 16.0) μm wide, hyaline to dark brown, branched, septate, smooth, thin-walled, becoming light brown to golden brown, constricted at the septa, thick-walled. Conidiogenous cells (5.0 –) 7.5–15.0 (– 21.0) × (3.0 –) 4.2–7.0 (– 9.0) μm (x ̄ = 11.8 × 5.8 μm, n = 25), undifferentiated, intercalary, rarely terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to dark brown. Conidia oval, obovoid to ellipsoidal, elongated, or globose to subglobose, hyaline, becoming light brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled, (4.0 –) 5.4–9.0 (– 11.0) × 2.5–4.7 (– 6.3) μm (x ̄ = 7.0 × 3.8 μm, n = 200), budding occasionally observed. Chlamydospores (7.4 –) 8.7–11 (– 14.9) (x ̄ = 10.0 μm, n = 25) µm wide, produced in aerial hyphae, mostly intercalary, solitary or in branched chains, globose to subglobose or ellipsoidal, hyaline becoming golden brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose (weak), L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside (weak), cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate (weak), succinate, citrate, ethanol, and xylitol (weak) are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, black sediment formed in D - glucose, D - arabinose, methyl- α - D - glucoside, and D - gluconate, while white sediment observed in lactose.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Suthep, isolated from Indian head ginger flower ( Cheilocostus speciosus; Costaceae, Zingiberales), Sep 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 833 .</p><p>Habitat and distribution.</p><p>Flowers of Cheilocostus speciosus and Lagerstroemia speciosa . Known only from northern Thailand.</p><p>Notes.</p><p>In the multilocus phylogenetic tree, A. lannaense SDBR-CMU 833 and SDBR-CMU 863 (ex-type) formed a distinct monophyletic lineage (100 % MLBS and 0.99 BIPP) that was sister to A. albui and A. floricola (Fig. 2). Comparisons of nucleotide sequences showed that the rpb 2 sequence of A. lannaense showed 96.97 % similarity to that of A. albui NRRL 61482 (ex-type) (18 / 594 bp, including gaps) and 96.59 % similarity to that of A. albui SDBR-CMU 866 (32 / 921 bp, including gaps), whereas the tef 1 sequence showed 93.93 % similarity to that of A. albui SDBR-CMU 866 (17 / 266 bp, including gaps). The tef 1 sequence of A. lannaense showed 93.51 % similarity to that of A. floricola SDBR-CMU 829 (ex-type) (18 / 266 bp, including gaps). Morphological comparison revealed distinct colony characteristics among the three species. On MEA, A. lannaense produced yellowish-white to dark-gray to black colonies, A. floricola produced olive-brown to black colonies with yellowish-white margins, and A. albui produced yellowish-brown to smoke-brown colonies with white margins. On OA, A. lannaense formed light-gray to olive-brown colonies with light-gray margins, differing from A. floricola, which formed yellowish-white to orange-white colonies, and A. albui, which formed whitish-gray colonies with light-gray margins. Aureobasidium lannaense can be distinguished from A. albui and A. floricola by its lack of endoconidium production. Growth at 4 ° C was observed only in A. albui, whereas both A. lannaense and A. floricola did not grow at this temperature. Moreover, the PHI test further supported the genetic distinctiveness of A. lannaense, A. albui, and A. floricola, confirming that they represent distinct species (Fig. 4). Aureobasidium lannaense can be distinguished from A. floricola by its ability to assimilate methyl- α - D - glucoside (Table 1). In addition, A. lannaense differs from A. albui in its ability to assimilate D - arabinose, L - rhamnose, salicin, glycerol, erythritol, ribitol, myo - inositol, ethanol, and xylitol as carbon sources, as well as creatine as a nitrogen source (Jumbam et al. 2025). Therefore, A. lannaense is described herein as a new species.</p></div>	https://treatment.plazi.org/id/0ABD8DE0E9875569B8E13907BABE4BB8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
A370677C604452A7B2E02E8FB8C780B1.text	A370677C604452A7B2E02E8FB8C780B1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium melanogenum (Herm. - Nijh.) Zalar, Gostincar & Gunde-Cim.	<div><p>Aureobasidium melanogenum (Herm. - Nijh.) Zalar, Gostincar &amp; Gunde-Cim., BMC Genomics 15: 16 (2014)</p><p>Fig. 16</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 45–65 mm diam., surface flat, spreading with entire margin, zonate, orange white (5 A 2), with brownish gray (4 E 2) to olive brown (4 E 6) at the margin; on MEA reaching 65–70 mm diam., surface flat, spreading with entire margin, velvety, zonate, dark brown (6 F 8) at center, becoming brownish orange (6 C 8), with brownish gray (4 E 2) and white at the margin; on OA 60–75 mm diam., surface flat, spreading with irregular margin, velvety, grayish orange (6 B 5), with brownish gray (4 E 2) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.3 –) 3.0–5.5 (– 8.0) μm wide, mostly hyaline, light brown to brown, branched, septate, constricted at the septa, smooth, thin-walled, getting darker and thicker with age. Conidiogenous cells (3.8 –) 5.3–11.0 (– 12.5) × (3.2 –) 4.0–7.5 (– 8.3) μm (x ̄ = 8.7 × 5.3 μm, n = 25), undifferentiated, intercalary, rarely terminal, producing conidia percurrently from indistinct lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated from hyphae, hyaline to lightly melanized. Conidia (3.6 –) 5.5–8.5 (– 11.4) × (2.0 –) 2.8–6.0 μm (x ̄ = 7.1 × 4.1 μm, n = 150), obovoid to ellipsoid, or subglobose, hyaline, becoming lightly melanized with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled. Chlamydospores (10.0) 11.5–14.0 (– 16.3) μm wide (x ̄ = 12.8 μm, n = 50), frequent produced in aerial hyphae, mostly intercalary, solitary or in branched chains, subglobose to ellipsoidal, pigmented, light to dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia absent.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Strains examined.</p><p>THAILAND • Chiang Mai, Mueang District, Chang Phueak, isolated from jasmine flower ( Jasminum sambac; Oleaceae, Lamiales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 817 ; Phayao Province, Mueang District, isolated from holy basil flower ( Ocimum tenuiflorum; Lamiaceae; Lamiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 855 .</p><p>Habitat and distribution.</p><p>Flowers of Jasminum sambac and Ocimum tenuiflorum in Thailand (this study). Aureobasidium melanogenum is found worldwide in diverse environments and materials, including air, soil, water, and indoor and plant surfaces, and is also considered an opportunistic human pathogen (Zalar et al. 2008; Gostinčar et al. 2014; Nasr et al. 2018; da Silva et al. 2024; Černoša et al. 2025; Patel et al. 2025).</p><p>Notes.</p><p>The multilocus phylogenetic tree (Fig. 2) showed that strains SDBR-CMU 817 and SDBR-CMU 855 clustered with other strains of A. melanogenum . The ITS, LSU, and tef 1 sequences were identical (100 % similarity) to those of A. melanogenum CBS 105.22 (ex-type), whereas the rpb 2 and tub sequences showed 98.90 % and 98.00 % similarity, respectively. The morphology of strains SDBR-CMU 817 and SDBR-CMU 855 is consistent with the species description of A. melanogenum provided by Zalar et al. (2008); therefore, both strains were identified as A. melanogenum .</p></div>	https://treatment.plazi.org/id/A370677C604452A7B2E02E8FB8C780B1	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
BBCD4B85C9125DC99BADA556F10FE058.text	BBCD4B85C9125DC99BADA556F10FE058.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium musti Jumbam & Aime	<div><p>Aureobasidium musti C. Onetto, S. Schmidt, M. Roach &amp; A. Borneman ex Jumbam &amp; Aime, Persoonia 54: 179 (2025)</p><p>Fig. 17</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 59–67 mm diam., surface flat, spreading with filiform, entire margin, velvety, shiny, reddish white (10 A 2); on MEA reaching 50–57 mm diam., surface flat, round with radiating, filamentous, gradient from pale yellow (2 A 3), light yellow (2 A 5) and yellow (2 A 8); on OA 60–67 mm diam., surface flat, spreading with entire margin, velvety, shiny, reddish white (10 A 2).</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.4 –) 3.0–8.0 (– 11.1) μm wide, hyaline to brown, becoming dark brown with age, branched, septate, smooth, thin-walled, getting darker and thicker with age, constricted at the septa. Conidiogenous cells (9.0 –) 9.8–14.0 (– 20.5) × (3.6 –) 4.5–6.5 (– 7.2) μm (x ̄ = 12.4 × 5.4 μm, n = 20), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to dark brown. Conidia obovoid to ellipsoidal, or elongated, hyaline to light brown, aseptate, occasionally with an indistinct truncated base and a hilum, smooth-walled, guttulate, (4.5 –) 5.5–9.2 (– 10.7) × (2.3 –) 2.6–4.5 (– 4.8) μm (x ̄ = 7.6 × 3.7 μm, n = 150). Chlamydospores (6.2 –) 7.6–10.2 (– 11.6) (x ̄ = 8.7 μm, n = 25) µm wide, produced in aerial hyphae, mostly intercalary, solitary or in branched chains, subglobose, brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia (3.4 –) 4.3–7.2 × 2.6–3.9 (– 4.8) μm (x ̄ = 5.6 × 3.4 μm, n = 30), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Cardinal temperatures for growth.</p><p>Minimum 4 ° C, optimum in the range of 25 ° C to 30 ° C, maximum 37 ° C.</p><p>Strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from confederate vine flower ( Antigonon leptopus; Polygonaceae, Caryophyllales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 825 , Suthep, isolated from white cheesewood flower ( Alstonia scholaris; Apocynaceae, Gentianales), Sep 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 864 .</p><p>Habitat and distribution.</p><p>Flowers of Alstonia scholaris and Antigonon leptopus in Thailand (this study); endophyte from pine needles, isolated from a bird feather, the phylloplanes of Cyrtomium falcatum, Lygodium japonicum, and Oryza sativa, and an unidentified phylloplane in the USA (Jumbam et al. 2025); Shiraz grape juice in Australia (Jumbam et al. 2025).</p><p>Notes.</p><p>Phylogenetic analysis showed that strains SDBR-CMU 825 and SDBR-CMU 864 grouped in the same clade as A. musti and formed a sister clade to A. chiangmaiense (Fig. 2). The ITS and LSU sequences of both strains were identical (100 % similarity) to those of A. musti NRRL 64173 (ex-type). Additionally, the morphological characteristics of SDBR-CMU 825 and SDBR-CMU 864 are similar to those of A. musti . Thus, SDBR-CMU 825 and SDBR-CMU 864 were identified as A. musti based on combined morphological and phylogenetic evidence. The differences in molecular data, morphological characteristics, and physiological traits between A. musti and A. chiangmaiense have been described above. This is the first report of A. musti in Thailand.</p></div>	https://treatment.plazi.org/id/BBCD4B85C9125DC99BADA556F10FE058	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
6E5F440803425FDEA8A9C6BB67E56EBB.text	6E5F440803425FDEA8A9C6BB67E56EBB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium oroxyli Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium oroxyli Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 18</p><p>Etymology.</p><p>Refers to the host genus Oroxylum, from which this species was isolated.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Phrao District, Nam Phrae, isolated from Indian trumpet flower ( Oroxylum indicum; Bignoniaceae, Lamiales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40133 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 827 = GMBCC 2499 = TBRC 21786 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 18–21 mm diam., surface round with raised, wrinkled margin, dry, reddish gray (10 B 2), with light gray (10 C 1) at the margin; on MEA reaching 20–25 mm diam., surface filamentous, slimy, round with raised, wrinkled, dry margin, grayish yellow (4 B 6) at center, with light gray (4 C 1) to yellowish gray (4 B 2) at the margin; on OA 25–30 mm diam., surface flat, spreading with irregular margin, wrinkled, yellowish white (2 A 2) at center, gradient from violet gray (17 D 2) to violet white (17 A 2), surrounded by light gray (17 B 1) clear zones on an agar medium.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.0 –) 3.2–6.5 (– 8.0) μm wide, hyaline to brown, branched, septate, smooth, thin-walled, getting darker and thicker with age, constricted at the septa, anastomosis observed. Conidiogenous cells 9.0–18.0 (– 22.4) × 2.9–5.2 (– 6.4) μm (x ̄ = 13.8 × 4.2 μm, n = 25), undifferentiated, intercalary, rarely terminal, producing conidia percurrently from short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to brown. Conidia (4.0 –) 5.2–8.7 (– 11.3) × (2.0 –) 2.6–5.0 (– 7.0) μm (x ̄ = 6.8 × 3.6 μm, n = 200), obovoid to ellipsoidal, subglobose, hyaline, aseptate, occasionally with an indistinct truncated base and a hilum, smooth-walled, guttulate, budding occasionally observed. Chlamydospores 6.9–14.0 (– 17.5) μm (x ̄ = 10.6 μm, n = 25) µm wide, produced in aerial hyphae, mostly intercalary, solitary or in branched chains, subglobose to ellipsoidal, pigmented, light to dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside (weak), cellobiose, salicin, melibiose (weak), lactose, raffinose, melizitose, glycerol, erythritol, ribitol (weak), glucitol (weak), mannitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid (weak), succinate, citrate, ethanol, and xylitol are assimilated, but N - acetyl glucosamine, inulin, soluble starch, galactitol, DL - lactate, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light pink pigmentation was observed in D - glucose. Brown sediment formed in D - xylose, L - arabinose, melibiose, and raffinose, while light brown sediment produced in cellobiose. Dark brown sediment presents in D - mannitol and D - gluconate, whereas dark sediment observed in D - ribose.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C, maximum 37 ° C. No growth at 4 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from Indian trumpet flower ( Oroxylum indicum; Bignoniaceae, Lamiales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 822 .</p><p>Habitat and distribution.</p><p>Flowers of Oroxylum indicum . Known only from northern Thailand.</p><p>Notes.</p><p>Multilocus phylogenetic analyses revealed that A. oroxyli strains SDBR-CMU 822 and SDBR-CMU 827 (ex-type) formed a distinct monophyletic lineage with 100 % MLBS and 1.00 BIPP support and were sister to A. tremulum (Fig. 2). The ITS and LSU sequence data of A. oroxyli showed similarities of 96.92 % and 98.80 %, respectively, to those of A. tremulum UN 1 (ex-type). However, the rpb 2, tef 1, and tub sequences could not be compared because sequences from the ex-type strain of A. tremulum were unavailable. Comparisons of ITS, LSU, rpb 2, tef 1, and tub sequences showed that A. oroxyli shared 99.56 %, 96.99–97.32 %, 91.39 %, 79.86–80.65 %, and 90.57 % similarity, respectively, with six A. tremulum strains obtained in this study. Because of the limited information available for A. tremulum, which was originally described only from yeast cells, detailed morphological comparisons could not be made (Crous et al. 2019). Furthermore, A. oroxyli and the A. tremulum strains obtained in this study can be morphologically distinguished by their colony coloration on MEA, with A. oroxyli forming grayish-yellow colonies with light-gray to yellowish-gray margins, whereas A. tremulum formed brownish-gray colonies with purplish-gray margins. Growth at 37 ° C was observed in A. oroxyli, whereas A. tremulum did not grow at this temperature (Crous et al. 2019; this study). Moreover, the conidia of A. oroxyli (4.0–11.3 µm) are generally shorter than those of A. tremulum (4.6–17.3 µm). Aureobasidium oroxyli can be distinguished from A. tremulum by its ability to assimilate lactose and glycerol and to produce pigmentation when grown on D - glucose (Crous et al. 2019). Thus, A. oroxyli is introduced as a novel species based on morphological and phylogenetic evidence.</p></div>	https://treatment.plazi.org/id/6E5F440803425FDEA8A9C6BB67E56EBB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
FA33F582F70D52FBBA1A1C13F820CB89.text	FA33F582F70D52FBBA1A1C13F820CB89.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium phayaoense Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium phayaoense Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 19</p><p>Etymology.</p><p>Refers to Phayao Province, where the flowers containing the new fungus were collected.</p><p>Type.</p><p>THAILAND • Phayao Province, Mueang District, isolated from Egyptian star cluster flower ( Pentas lanceolata; Rubiaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40126 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 852 = GMBCC 2508 = TBRC 21787 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 39–45 mm diam., surface flat, spreading with entire margin, velvety, concentric, gradient from gray (4 B 1), brownish gray (4 E 2) to grayish brown (7 E 3), with yellowish white (2 A 2) at the margin; on MEA reaching 40–48 mm diam., surface flat, spreading with entire margin, wrinkled, velvety, concentric, gradient from dull yellow (3 B 3) to grayish yellow (4 B 6), with yellowish white (2 A 2) at the margin; on OA 55–65 mm diam., surface flat, spreading with entire margin, wrinkled, brownish orange (6 C 8), grayish brown (6 E 3) with light gray (6 B 1) to brownish gray (4 E 2) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.0 –) 3.0–9.0 (– 12.0) μm wide, hyaline, light to brown with age, branched, septate, smooth, thin-walled, becoming dark melanized, getting darker and thicker with age, constricted at the septa, minute echinulate. Conidiogenous cells (7.5 –) 8.7–13.8 (– 17.4) × (3.6 –) 4.5–6.5 (– 7.5) μm (x ̄ = 10.9 × 5.5 μm, n = 25) µm, undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, occasionally elongated, solitary, light to dark brown. Conidia (4.0 –) 5.5–9.6 (– 11.8) × (1.9 –) 2.8–6.0 (– 7.4) μm (x ̄ = 7.6 × 4.3 μm, n = 170), oval, obovoid to ellipsoidal or elongated, or subglobose, hyaline, becoming light brown to brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled, budding occasionally observed. Chlamydospores (9.0 –) 10.4–14.0 (– 17.5) µm wide (x ̄ = 12.6 μm, n = 30), frequent produced in aerial hyphae, mostly intercalary, solitary, subglobose to ellipsoidal, pigmented, light to dark brown, septate, smooth-, thick-walled. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine (weak), ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α-α- trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose (weak), lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid (weak), citrate, ethanol, and xylitol are assimilated, but inulin, soluble starch, DL - lactate, succinate, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, dark brown sediment formed in N - acetyl glucosamine, D - xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, D-glucitol, galactitol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, and citrate, while light brown sediment formed in α - α - trehalose. Black sediment formed in D - glucose, D - galactose, L - sorbose, D - ribose, D - mannitol, myo - inositol, and xylitol, while white sediment observed in ethanol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C, maximum 37 ° C. No growth at 4 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from bush clock vine flower ( Thunbergia erecta; Acanthaceae, Lamiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 811 and SDBR-CMU 857 .</p><p>Habitat and distribution.</p><p>Flowers of Pentas lanceolata and Thunbergia erecta . Known only from northern Thailand.</p><p>Notes.</p><p>Phylogenetic analyses showed that A. phayaoense SDBR-CMU 852 (ex-type) and SDBR-CMU 857 formed a distinct lineage sister to A. pollinicola, with 80 % MLBS and 0.90 BIPP support (Fig. 2). Comparisons of ITS, LSU, rpb 2, tef 1, and tub nucleotide sequences showed that A. phayaoense differed from A. pollinicola by 1.01 % (6 / 592 bp, including gaps), 0.33 % (3 / 901 bp, including gaps), 4.85 % (46 / 948 bp, including gaps), 7.83 % (21 / 268 bp, including gaps), and 2.93 % (12 / 409 bp, including gaps), respectively. Although comparisons of the ITS, LSU, and tub loci indicated that A. phayaoense was not markedly different from A. pollinicola, the rpb 2 and tef 1 sequences revealed clear differences. Morphologically, the colony colors of A. phayaoense and A. pollinicola differed across culture media. On PDA, A. phayaoense produced gray to grayish-brown colonies with a yellowish-white margin, whereas A. pollinicola formed light- to dark-yellowish colonies with a yellowish-white margin. On MEA, colonies of A. phayaoense were dull yellow to grayish yellow with a yellowish-white margin, compared with the grayish-yellow colonies with a light-gray margin of A. pollinicola . On OA, A. phayaoense produced brownish-orange to grayish-brown colonies with a light-gray to brownish-gray margin, whereas A. pollinicola formed yellowish-white colonies with a light-gray margin. The micromorphological features of A. phayaoense and A. pollinicola are similar in size; however, A. phayaoense can be distinguished from A. pollinicola by the absence of endoconidium production. Moreover, PHI analyses revealed no evidence of significant recombination between A. phayaoense and A. pollinicola (Fig. 3). Aureobasidium phayaoense can be distinguished from A. pollinicola by its inability to assimilate DL - lactate and succinate (Table 1). Hence, A. phayaoense is introduced as a new species based on combined morphological and phylogenetic evidence.</p></div>	https://treatment.plazi.org/id/FA33F582F70D52FBBA1A1C13F820CB89	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
2D7E48B61BE75E5694872B3AE134DD96.text	2D7E48B61BE75E5694872B3AE134DD96.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium plumeriae Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium plumeriae Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 20</p><p>Etymology.</p><p>Refers to the host genus Plumeria, from which this species was isolated.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from frangipani flower ( Plumeria obtusa; Apocynaceae, Gentianales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40128 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 836 = GMBCC 2502 = TBRC 21788 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 58–64 mm diam., surface flat, spreading with entire margin, velvety, concentric, yellowish white (2 A 2), olive gray (1 D 2), with white to olive gray (1 D 2) at the margin; on MEA reaching 55–60 mm diam., surface flat, spreading with filiform margin, velvety, yellowish white (2 A 2) or pale yellow (2 A 3) at center, gradient from dark to light olive (2 F 6), with yellowish gray (4 B 2) to dull yellow (3 B 3) at the margin; on OA 65–70 mm diam., surface flat, spreading with entire margin, velvety, yellowish white (2 A 2), with light gray (2 C 1) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.2 –) 3.3–8.0 (– 10) μm wide, hyaline, becoming light brown to brown melanized with age, branched, septate, smooth, thin-walled, getting thicker, constricted at the septa with age, anastomosis observed. Conidiogenous cells (4.8 –) 7.0–14.0 (– 18) × 3.0–5.0 μm (x ̄ = 11.9 × 3.8 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to dark brown. Conidia (4.2 –) 5.2–8.7 (– 11.7) × 2–4.6 (– 6.0) μm (x ̄ = 7.0 × 3.9 μm, n = 200), oval, ellipsoidal to obovoid, or globose to subglobose, hyaline, becoming light brown to brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled. Chlamydospores (6.5 –) 7.8–9.0 (– 10) (x ̄ = 8.5 μm, n = 25) µm wide, produced in aerial hyphae, intercalary, solitary or in branched chains, subglobose, dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia 3.2–5.6 (– 6.3) × 1.8–2.8 (– 3.5) μm (x ̄ = 4.4 × 2.6 μm, n = 25), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose (weak), sorbose (weak), N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose (weak), lactose (weak), raffinose, melizitose (weak), glycerol (weak), erythritol (weak), ribitol, glucitol, mannitol, galactitol, myo - inositol (weak), D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate (weak), D - galacturonic acid (weak), DL - lactate, succinate (weak), citrate (weak), ethanol, and xylitol are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, black sediment formed in D - glucose, D - galactose, L - sorbose, N - acetyl glucosamine, D - xylose, L - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, D - glucitol, D - mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate, succinate, and citrate, while white sediment observed in D - ribose, D - arabinose, ethanol, and xylitol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from frangipani flower ( Plumeria obtusa; Apocynaceae, Gentianales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 826 .</p><p>Habitat and distribution.</p><p>Flowers of Plumeria obtusa . Known only from northern Thailand.</p><p>Notes.</p><p>The multilocus phylogenetic tree (Fig. 2) revealed that A. plumeriae SDBR-CMU 826 and SDBR-CMU 836 (ex-type) formed a monophyletic lineage with strong support (100 % MLBS and 0.98 BIPP). Aureobasidium plumeriae formed a sister clade to A. motuoense, A. phayaoense, A. pollinicola, and A. siamense . Sequence comparison showed that the ITS sequence of A. plumeriae showed 98.77 %, 99.66 %, 99.83 %, and 100 % similarity to those of A. motuoense, A. siamense, A. pollinicola, and A. phayaoense, respectively, whereas the LSU sequences showed 100 % similarity among all related species. In contrast, comparisons of the rpb 2, tef 1, and tub sequences revealed lower sequence similarity between A. plumeriae and its closest relatives, with 96.01 %, 92.83 %, and 97.24 % similarity to A. phayaoense; 96.33 %, 91.99 %, and 97.24 % similarity to A. pollinicola; and 96.24 %, 92.44 %, and 97.24 % similarity to A. siamense, respectively. However, differences in the rpb 2, tef 1, and tub sequence data could not be compared because sequences of A. motuoense were unavailable. Morphologically, the colony characteristics of A. plumeriae differed from those of most phylogenetically related sister taxa. In terms of growth temperature, A. plumeriae did not grow at 37 ° C, whereas A. phayaoense and A. pollinicola grew at this temperature. Aureobasidium plumeriae differs from A. phayaoense and A. siamense by the presence of endoconidia. In addition, A. plumeriae differs from A. motuoense, A. pollinicola, and A. siamense in having smaller conidia [(4.2 –) 5.2–8.7 (– 11.7) × 2.0–4.6 (– 6.0) μm vs. (6.5 –) 10.0–17.0 × 3.9–6.5 (– 7.4) μm vs. (3.2 –) 6.0–9.4 (– 14.5) × (2.1 –) 3.3–5.5 (– 6.6) μm vs. (5.1 –) 7.4–11.0 (– 16.2) × (2.1 –) 3.6–5.9 (– 8.2) μm] (Wu et al. 2023; this study). Furthermore, the PHI test indicated no significant recombination among these taxa (Fig. 3), supporting the recognition of A. motuoense, A. phayaoense, A. plumeriae, A. pollinicola, and A. siamense as distinct species. Based on physiological tests, A. plumeriae differs from A. phayaoense in its ability to assimilate DL - lactate and succinate (Table 1). In contrast, A. siamense differs from A. plumeriae by producing pigment when grown on D - glucono- 1, 5 - lactone. Moreover, A. pollinicola can be differentiated from A. plumeriae by differences in sediment formation characteristics (Table 1). Thus, A. plumeriae is introduced as a new species based on phylogenetic analyses, morphological and phenotypic characteristics, and growth temperature data.</p></div>	https://treatment.plazi.org/id/2D7E48B61BE75E5694872B3AE134DD96	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
A6F08C3CBCA250C18729572267504B38.text	A6F08C3CBCA250C18729572267504B38.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium pollinicola Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium pollinicola Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 21</p><p>Etymology.</p><p>Refers to its association with pollen, from which this species was isolated.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from marguerite daisy flower ( Argyranthemum frutescens; Asteraceae, Asterales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40134 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 861 = GMBCC 2510 = TBRC 21789 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 50–55 mm diam., surface flat, spreading with entire margin, powdery, wrinkled, gradient from light to dark yellowish gray (4 B 2), with yellowish white (2 A 2) at the margin; on MEA reaching 40–46 mm diam., surface flat, powdery, spreading with entire margin, grayish yellow (4 B 4), with light gray (2 B 2) at the margin; on OA 42–47 mm diam., surface flat, powdery, wrinkled, spreading with entire margin, yellowish white (2 A 2), with light gray (2 B 2) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.8 –) 3.5–8.0 (– 9.5) μm wide, hyaline to light brown, becoming dark brown melanized, branched, septate, smooth-, thin-walled, getting thicker, constricted at the septa with age. Conidiogenous cells (6.0 –) 10.0–16.0 (– 24.6) × (3.8 –) 4.0–5.7 μm (x ̄ = 13.0 × 4.6 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to dark brown. Conidia fusoid, obovoid to ellipsoidal, or oval, or globose to subglobose, hyaline, becoming light brown to brown melanized, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled, (3.2 –) 6.0–9.4 (– 14.5) × (2.1 –) 3.3–5.5 (– 6.6) μm (x ̄ = 7.7 × 4.5 μm, n = 200), budding occasionally observed. Chlamydospores (6.8 –) 7.5–9.1 (– 10.2) μm wide (x ̄ = 8.3 μm, n = 25), produced in aerial hyphae, mostly intercalary, solitary or in branched chains, globose to subglobose, light to dark brown, smooth-, thick-walled, septate, 1–2 cells, constricted near the septa. Endoconidia (2.9 –) 5.5–7.5 (– 8.2) × (2.0 –) 2.3–3.8 (– 4.5) μm (x ̄ = 6.5 × 3.2 μm, n = 35), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose (weak), D - arabinose, L - rhamnose (weak), sucrose (weak), maltose, α - α - trehalose (weak), methyl- α - D - glucoside (weak), cellobiose (weak), salicin (weak), melibiose (weak), lactose, raffinose (weak), melizitose, glycerol, erythritol (weak), ribitol, glucitol, mannitol (weak), galactitol (weak), myo - inositol (weak), D - glucono- 1, 5 - lactone (weak), D - gluconate, D - glucuronate (weak), D - galacturonic acid, DL - lactate (weak), succinate, citrate, ethanol (weak), and xylitol (weak) are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light brown sediment formed in D - xylose, erythritol, D - mannitol, galactitol, and myo - inositol. Black sediment formed in D - glucose, D - galactose, L - sorbose, N - acetyl glucosamine, D - ribose, L - arabinose, D- arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, ribitol, D - glucitol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate, succinate, citrate, ethanol, and xylitol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C, maximum 37 ° C. No growth at 4 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from frangipani flower ( Plumeria obtusa; Apocynaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 810 ; isolated from vinca flower ( Catharanthus roseus; Apocynaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 813 and SDBR-CMU 843 .</p><p>Habitat and distribution.</p><p>Flowers of Argyranthemum frutescens, Catharanthus roseus, and Plumeria obtusa . Known only from northern Thailand.</p><p>Notes.</p><p>Phylogenetic analyses (Fig. 2) showed that A. pollinicola SDBR-CMU 810, SDBR-CMU 813, SDBR-CMU 843, and SDBR-CMU 861 (ex-type) formed a distinct monophyletic lineage with 100 % MLBS and 0.97 BIPP support that was sister to A. phayaoense . However, molecular sequence data, morphological and physiological characteristics, and PHI analyses clearly distinguished them as distinct species, as mentioned above. Therefore, A. pollinicola is described herein as a new species.</p></div>	https://treatment.plazi.org/id/A6F08C3CBCA250C18729572267504B38	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
806CADC275D7546991B061E6A6FBCA9F.text	806CADC275D7546991B061E6A6FBCA9F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium saisamorniae Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium saisamorniae Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 22</p><p>Etymology.</p><p>Named in honor of Thai mycologist Saisamorn Lumyong in celebration of her 75 th birthday.</p><p>Type.</p><p>THAILAND • Phayao Province, Mueang District, isolated from butter daisy flower ( Melampodium divaricatum; Asteraceae, Asterales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40131 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 848 = GMBCC 2505 = TBRC 21790 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 39–41 mm diam., surface flat, spreading, round with slight raised margin, velvety, gradient from light to dark yellowish gray (4 B 2), with pale yellow (2 A 3) at the margin; on MEA reaching 45–59 mm diam., surface flat, spreading with filiform, entire margin, yellowish brown (5 E 8) at center, pale orange (6 A 3), with grayish yellow (4 B 4) at the margin; on OA 60–65 mm diam., surface flat, spreading with entire margin, yellowish white (2 A 2), with light gray (2 B 1) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.5 –) 3.9–6.5 (– 10) μm wide, hyaline to dark brown, branched, septate, smooth, thin-walled, getting darker and thicker with age, constricted at the septa. Conidiogenous cells 8.3–10.6 (– 16.4) × 4.0–5.7 (– 9.6) μm (x ̄ = 10.4 × 5.7 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, hyaline to dark brown. Conidia (3.6 –) 5.4–8 (– 10.7) × 2.2–4.5 (– 5.7) μm (x ̄ = 6.5 × 3.5 μm, n = 200) µm, fusoid, obovoid to ellipsoidal, or subglobose, hyaline, becoming light brown to brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled. Chlamydospores (6.5 –) 7.2–13.5 (– 16.0) μm wide (x ̄ = 9.8 μm, n = 35), frequent produced in aerial hyphae, mostly intercalary, solitary, subglobose to ellipsoidal, pigmented, light to dark brown, smooth-, thick-walled, septate. Endoconidia (4.5 –) 5.2–7.0 (– 7.8) × (2.0 –) 2.5–3.7 (– 4.5) μm (x ̄ = 6.1 × 3.3 μm, n = 25), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose (weak), sorbose (weak), N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose (weak), L - rhamnose, sucrose, maltose, α - α - trehalose (weak), methyl- α - D - glucoside (weak), cellobiose, salicin, melibiose (weak), lactose, raffinose, melizitose, glycerol, erythritol, ribitol, glucitol, mannitol, galactitol (weak), myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate (weak), D - glucuronate, D - galacturonic acid (weak), DL - lactate, succinate, citrate, ethanol, and xylitol are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, black sediment formed in D - glucose, D - galactose, L - sorbose, N - acetyl glucosamine, D - ribose, D - xylose, L - arabinose, D - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, D - glucitol, D - mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate, succinate, citrate, ethanol, and xylitol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C, maximum 37 ° C. No growth at 4 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from Chinese ixora flower ( Ixora chinensis; Rubiaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 846 ; isolated from holy basil flower ( Ocimum tenuiflorum; Lamiaceae; Lamiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 854 .</p><p>Habitat and distribution.</p><p>Fowers of Ixora chinensis, Melampodium divaricatum, and Ocimum tenuiflorum . Known only from northern Thailand.</p><p>Notes.</p><p>The multilocus phylogenetic tree (Fig. 2) indicated that A. saisamorniae strains SDBR-CMU 846, SDBR-CMU 848 (ex-type), and SDBR-CMU 854 formed a well-supported monophyletic lineage (100 % MLBS and 0.95 BIPP) and were sister to A. savitreeae (72 % MLBS and 0.94 BIPP). The ITS and LSU sequences of A. saisamorniae showed 100 % similarity to those of A. savitreeae, whereas the rpb 2, tef 1, and tub sequences exhibited similarities of 99.90 %, 94.74 %, and 99.75 %, respectively. A comparison of nucleotides in the tef 1 sequence showed that A. saisamorniae differed by 5.3 % (15 / 285 bp, including gaps). Morphologically, colonies of A. saisamorniae on MEA were pale orange to yellowish brown at the center with a grayish-yellow margin, and those on OA were yellowish white with a light-gray margin, whereas colonies of A. savitreeae on MEA were orange white, and those on OA were pale yellow with a light brownish-gray margin. In terms of growth temperature, A. saisamorniae was capable of growing at 37 ° C, whereas A. savitreeae was unable to grow at this temperature. Furthermore, the PHI test supported the genetic distinctiveness of A. saisamorniae and A. savitreeae (Fig. 3), indicating that they represent different species. Physiologically, A. saisamorniae produced a black sediment during carbon assimilation, whereas A. savitreeae produced brown sediment (Table 1). In addition, A. savitreeae is characterized by the production of light pink pigmentation on D - glucose, D - xylose, erythritol, L - arabinose, melezitose, raffinose, and sucrose, whereas A. saisamorniae does not produce pigmentation (Table 1). Thus, A. saisamorniae was introduced as a new species.</p></div>	https://treatment.plazi.org/id/806CADC275D7546991B061E6A6FBCA9F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
B693E14C1FEA54799B479EEDD56F0808.text	B693E14C1FEA54799B479EEDD56F0808.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium savitreeae Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium savitreeae Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 23</p><p>Etymology.</p><p>Named in honor of Thai mycologist Savitree Limtong for her contributions to Thai Mycology.</p><p>Type.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from confederate vine flower ( Antigonon leptopus; Polygonaceae, Caryophyllales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40132 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 824 = GMBCC 2498 = TBRC 21791 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 45–55 mm diam., surface flat, spreading with filiform, entire margin, velvety, pale yellow (2 A 3); on MEA reaching 47–56 mm diam., surface flat, spreading with filiform, entire margin, orange white (5 A 2); on OA 65–70 mm diam., surface flat, spreading with entire margin, fluffy, pale yellow (2 A 3), with light brownish gray (4 E 2) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 2.3–5.5 (– 6.8) μm wide, hyaline to dark brown, branched, septate, smooth, thin-walled, getting dark melanized and thicker, constricted at the septa with age. Conidiogenous cells (6.3 –) 8.0–17.5 (– 20) × (3.3 –) 4.0–5.5 (– 6.4) μm (x ̄ = 12.5 × 4.6 μm, n = 25), undifferentiated, intercalary, terminal, producing conidia percurrently from indistinct, short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated on hyphae, occasionally elongated, solitary, hyaline to dark brown. Conidia (3.5 –) 5.2–6.8 (– 9.1) × (2.2 –) 3.0–4.5 (– 6.5) μm (x ̄ = 6.0 × 3.7 μm, n = 200), fusoid, obovoid to ellipsoidal, hyaline to light brown, becoming brown melanized with age, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled. Chlamydospores (4.4 –) 5.4–9.0 (– 11.8) × 2.6–7.6 μm (x ̄ = 7.2 × 5.5 μm, n = 100), frequent produced in aerial hyphae, mostly intercalary, solitary or in branched chains, ellipsoidal, globose to subglobose, pigmented, light to dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia (3.8 –) 4.9–7.2 (– 8.0) × (2.2 –) 3.0–4.8 (– 5.5) μm (x ̄ = 6.1 × 3.9 μm, n = 50), obovoid to ellipsoidal, hyaline, occasionally seen in intercalary hyphal cells.</p><p>Fermentation of glucose is negative. D - glucose, galactose (weak), sorbose (weak), N - acetyl glucosamine (weak), ribose (weak), xylose, L - arabinose, D - arabinose (weak), L - rhamnose, sucrose, maltose (weak), α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin (weak), melibiose (weak), lactose (weak), raffinose, melizitose, glycerol (weak), erythritol (weak), ribitol (weak), glucitol, mannitol (weak), galactitol, myo - inositol (weak), D - glucono- 1, 5 - lactone (weak), D - gluconate (weak), D - glucuronate (weak), D - galacturonic acid (weak), DL - lactate, succinate, citrate, ethanol (weak), and xylitol (weak) are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light pink pigmentation and brown sediment were observed in D - glucose, D - xylose, L - arabinose, sucrose, raffinose, melizitose, and erythritol. Brown sediment formed in D - galactose, L - sorbose, N - acetyl glucosamine, D - ribose, D - arabinose, L - rhamnose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, salicin, melibiose, lactose, glycerol, ribitol, D - glucitol, D - mannitol, galactitol, myo - inositol, D - glucono- 1, 5 - lactone, D - gluconate, D - glucuronate, D - galacturonic acid, DL - lactate, succinate, citrate, ethanol, and xylitol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from oleander flower ( Nerium oleander; Apocynaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 841 .</p><p>Habitat and distribution.</p><p>Flowers of Antigonon leptopus and Nerium oleander . Known only from northern Thailand.</p><p>Notes.</p><p>The multilocus phylogenetic tree (Fig. 2) indicated that A. savitreeae formed a monophyletic clade (100 % MLBS and 0.96 BIPP support) and was sister to A. saisamorniae . However, differences in molecular data, growth temperature, and morphological and physiological characteristics, as mentioned above, together with the PHI test results (Fig. 3), supported the recognition of A. savitreeae and A. saisamorniae as distinct species. Therefore, A. savitreeae is introduced here as a new species.</p></div>	https://treatment.plazi.org/id/B693E14C1FEA54799B479EEDD56F0808	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
5AA2FBB39CC855A7AAECB2876AEFBA63.text	5AA2FBB39CC855A7AAECB2876AEFBA63.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium siamense Senwanna, Kodchasee, J. Kumla & N. Suwannar. 2026	<div><p>Aureobasidium siamense Senwanna, Kodchasee, J. Kumla &amp; N. Suwannar. sp. nov.</p><p>Fig. 24</p><p>Etymology.</p><p>Refers to Siam (the former name of Thailand), where the new species was found.</p><p>Type.</p><p>THAILAND • Phayao Province, Mueang District, isolated from butter daisy flower ( Melampodium divaricatum; Asteraceae, Asterales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, holotype = CMUB 40127 (preserved in metabolically inactive state), living culture (ex-type) = SDBR-CMU 847 = GMBCC 2504 = TBRC 21792 .</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 45–53 mm diam., surface flat, spreading, round with radiating margin, velvety, shiny, light brown (6 D 4) to brown (6 E 8), with brownish gray (4 E 2) to black at the margin; on MEA reaching 48–59 mm diam., surface flat, spreading with lobate margin, velvety, shiny, wrinkled, light brown (6 D 4) to brown (6 E 8) or grayish brown (6 E 3), with brownish gray (4 E 2) to black at the margin; on OA 60–69 mm diam., surface flat, spreading with entire margin, velvety, gradient from light to dark grayish yellow (4 B 4), with grayish brown (6 E 3) to dull red (11 C 4) at the margin.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae 4.0–8.0 (– 10.2) μm wide, hyaline to dark brown, branched, septate, smooth, thin-walled, getting darker and thicker, constricted at the septa with age. Conidiogenous cells (8.9 –) 9.5–14.8 (– 16.1) × 4.8–6.0 (– 7.2) μm (x ̄ = 11.9 × 6.2 μm, n = 25), undifferentiated intercalary, terminal, producing conidia percurrently from indistinct lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated from hyphae, occasionally elongated, solitary, hyaline to light brown, becoming golden brown to dark brown with age. Conidia (5.1 –) 7.4–11.0 (– 16.2) × (2.1 –) 3.6–5.9 (– 8.2) μm (x ̄ = 9.3 × 5.0 μm, n = 200), obovoid to ellipsoidal, hyaline to light brown, aseptate, occasionally with an indistinct truncated base and a hilum, guttulate, smooth-walled, becoming light brown to brown with age, 0–1 - septate. Chlamydospores 6.6–10.6 (– 12.7) μm wide (x ̄ = 9.0 μm, n = 25), produced in aerial hyphae, mostly intercalary, solitary or in branched chains, subglobose, dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia absent.</p><p>Fermentation of glucose is negative. D - glucose, galactose, sorbose, N - acetyl glucosamine, ribose, xylose, L - arabinose, D - arabinose, L- rhamnose, sucrose, maltose, α-α- trehalose, methyl- α - D - glucoside (weak), cellobiose (weak), salicin, melibiose (weak), lactose (weak), raffinose (weak), melizitose (weak), glycerol, erythritol (weak), ribitol, glucitol, mannitol (weak), galactitol, myo - inositol (weak), D - glucono- 1, 5 - lactone, D - gluconate (weak), D - glucuronate (weak), D - galacturonic acid (weak), DL - lactate (weak), succinate (weak), citrate (weak), ethanol (weak), and xylitol (weak) are assimilated, but inulin, soluble starch, and methanol are not assimilated. Ammonium sulfate, ethylamine hydrochloride, L - lysine, cadaverine, and creatine are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. After 3 weeks, light brown pigmentation and dark brown sediment were observed in D - glucono- 1, 5 - lactone. Dark brown sediment formed in D - galactose, L - sorbose, and salicin, whereas light brown sediment presented in D - glucose. Back sediment formed in D - ribose, D - arabinose, and D - gluconate, while white sediment preformed in N - acetyl glucosamine, D - xylose, L - arabinose, L - rhamnose, sucrose, maltose, α - α - trehalose, methyl- α - D - glucoside, cellobiose, melibiose, lactose, raffinose, melizitose, glycerol, erythritol, ribitol, D - glucitol, D - mannitol, galactitol, myo - inositol, D - glucuronate, D - galacturonic acid, DL - lactate, succinate, citrate, ethanol, and xylitol.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Additional strains examined.</p><p>THAILAND • Phayao Province, Mueang District, isolated from Egyptian star cluster flower ( Pentas lanceolata; Rubiaceae, Gentianales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 837 .</p><p>Habitat and distribution.</p><p>Flowers of Melampodium divaricatum and Pentas lanceolata . Known only from northern Thailand.</p><p>Notes.</p><p>Phylogenetic analyses showed that A. siamense strains SDBR-CMU 837 and SDBR-CMU 847 (ex-type) formed a distinct lineage with strong support (100 % MLBS and 0.99 BIPP) and were sister to A. motuoense (Fig. 2). The ITS and LSU sequences of A. siamense showed 98.77 % and 100 % similarity, respectively, to those of A. motuoense strains XZY 411-4 (ex-type), E 26-4, E 31-4, and E 82-2. However, the rpb 2, tef 1, and tub sequences could not be compared because sequences of A. motuoense were unavailable. Morphologically, A. siamense is distinguishable from A. motuoense based on differences in colony characteristics. Colonies of A. siamense on PDA are light brown to brown with brownish-gray to black margins; those on MEA are light brown to grayish brown with brownish-gray to black margins; and those on OA are light to dark grayish yellow with grayish-brown to dull-red margins. In contrast, colonies of A. motuoense on PDA are dark brown with black zones; those on MEA are brownish olivaceous; and those on OA are pitch black. Aureobasidium siamense is distinguished from A. motuoense by the production of endoconidia. In addition, A. siamense differs from A. motuoense in having longer conidiogenous cells [(8.9 –) 9.5–14.8 (– 16.1) × 4.8–6.0 (– 7.2) μm vs. 6.4–12.2 × 3.6–4.5 μm] (Wu et al. 2023). However, because of the lack of available physiological characteristics of A. motuoense, a direct comparison between A. siamense and A. motuoense could not be made. Thus, A. siamense is described herein as a new species based on morphological and multilocus phylogenetic analyses.</p></div>	https://treatment.plazi.org/id/5AA2FBB39CC855A7AAECB2876AEFBA63	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
08D4B1031EEB500C8660BFA2A377FC54.text	08D4B1031EEB500C8660BFA2A377FC54.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Aureobasidium tremulum Inamdar, Roh. Sharma & Adhapure	<div><p>Aureobasidium tremulum Inamdar, Roh. Sharma &amp; Adhapure, Persoonia 42: 383 (2019)</p><p>Fig. 25</p><p>Cultural characteristics.</p><p>After 14 days of incubation at 25 ° C in the dark, colonies on PDA reaching 27–30 mm diam., surface flat, spreading with irregular, lobate margin, orange white (5 A 2), light gray (5 B 2) at the margin; on MEA reaching 24–35 mm diam., surface flat, spreading with irregular margin, velvety, purplish gray (14 D 2) in outer ring, brownish gray (4 E 2) towards to the center; on OA 30–50 mm diam., surface flat, spreading with irregular margin, velvety, aerial mycelium sparse, floccose, light gray (4 B 1) in outer ring, grayish brown (5 E 3) towards to the center, yellowish brown (5 E 8) at center.</p><p>Description.</p><p>Anamorph in vitro dematiaceous hyphomycetes. Vegetative hyphae (2.4 –) 4.0–5.8 (– 7.6) μm wide, mostly hyaline, branched, septate, smooth-, thin-walled, getting darker and thicker, constricted at the septa, minutely echinulate with age, anastomosis observed. Conidiogenous cells (8.5 –) 9.5–17.5 (– 20.6) × (3.7 –) 5.2–7.0 (– 8.5) μm (x ̄ = 13.9 × 6.1 μm, n = 25), undifferentiated, intercalary, rarely terminal, or producing conidia percurrently from short lateral denticles, giving rise to conidia that aggregate in a mucoid mass, or differentiated from hyphae. Conidia (4.6 –) 6.8–10.0 (– 17.3) × (2.8 –) 3.9–5.5 (– 7.2) μm (x ̄ = 8.1 × 4.5 μm, n = 170), fusoid, obovoid to ellipsoid, or oval, or globose, hyaline, becoming light brown to brown with age, aseptate, occasionally with an indistinct truncated base and a hilum, minutely echinulate, budding occasionally observed. Chlamydospores (7.0 –) 8.5–13.0 (– 16) μm wide (x ̄ = 10.6 μm, n = 30), frequent produced in aerial hyphae, mostly intercalary, solitary or in branched chains, sub globose to ellipsoidal, pigmented, light to dark brown, smooth-, thick-walled, septate, constricted near the septa. Endoconidia absent.</p><p>Cardinal temperatures for growth.</p><p>Minimum 10 ° C, optimum in the range of 25 ° C to 30 ° C. No growth at 4 ° C and 37 ° C.</p><p>Strains examined.</p><p>THAILAND • Chiang Mai Province, Mueang District, Chang Phueak, isolated from Spanish needle flower ( Bidens pilosa; Asteraceae, Asterales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 814 ; isolated from Carey rose flower ( Rosa hybrida ‘ AUSweather’; Rosaceae, Rosales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 820 ; isolated from holy basil flower ( Ocimum tenuiflorum; Lamiaceae; Lamiales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 856) ; Chiang Mai Province, Mueang District, Suthep, isolated from American cassia flower ( Senna spectabilis; Fabaceae, Fabales), Jul 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 816 and SDBR-CMU 834 ; Phayao Province, Mueang District, isolated from tropical hibiscus flower ( Hibiscus rosa-sinensis; Malvaceae, Malvales), Aug 2024, P. Kodchasee, C. Senwanna, J. Kumla and N. Suwannarach, living culture = SDBR-CMU 838 F 277 .</p><p>Habitat and distribution.</p><p>From laboratory contaminants in India (Crous et al. 2019); flowers of Bidens pilosa, Hibiscus rosa-sinensis, Ocimum tenuiflorum, Rosa hybrida ‘ AUSweather, ’ and Senna spectabilis in Thailand (this study).</p><p>Notes.</p><p>Phylogenetically, strains SDBR-CMU 814, SDBR-CMU 816, SDBR-CMU 820, SDBR-CMU 834, SDBR-CMU 838, and SDBR-CMU 856 belonged to the A. tremulum clade (Fig. 2), which formed a sister clade to A. oroxyli . The differences in sequence data and morphological characteristics between A. tremulum and A. oroxyli are mentioned above. However, the morphological characteristics of the strains could not be compared with those of the type strain of A. tremulum because it is known only from its yeast form (Crous et al. 2019). Comparisons of the ITS, LSU, rpb 2, and tub sequences among A. tremulum strains SDBR-CMU 834 and SDBR-CMU 838 and strains SDBR-CMU 816 and SDBR-CMU 820 showed no significant differences. Although strains SDBR-CMU 814 and SDBR-CMU 856 formed a sister clade to A. tremulum and differed by only 3.2 % (9 / 277 bp, including gaps) in the tef 1 sequence, their morphological characteristics, growth temperature, and the currently available data do not support recognition as a distinct species. Until morphological data and sequences of reliable genes (rpb 2, tef 1, and tub) from the type strain are obtained and verified, these strains are therefore treated as A. tremulum . This study represents the first report of A. tremulum in Thailand.</p></div>	https://treatment.plazi.org/id/08D4B1031EEB500C8660BFA2A377FC54	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Senwanna, Chanokned;Kodchasee, Pratthana;Kathongthung, Chirayut;Samarakoon, Milan C.;Khunnamwong, Pannida;Kumla, Jaturong;Suwannarach, Nakarin	Senwanna, Chanokned, Kodchasee, Pratthana, Kathongthung, Chirayut, Samarakoon, Milan C., Khunnamwong, Pannida, Kumla, Jaturong, Suwannarach, Nakarin (2026): Unexpected diversity of flower-associated Aureobasidium reveals sixteen novel species from northern Thailand. IMA Fungus 17: e 188009, DOI: 10.3897/imafungus.17.188009
