identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
537E4888EA805045AE4CFB5CA39FBF4C.text	537E4888EA805045AE4CFB5CA39FBF4C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lasiodiplodia carlesii L. Y. Tian, Y. F. Zhang & Ning Jiang 2026	<div><p>Lasiodiplodia carlesii L. Y. Tian, Y. F. Zhang &amp; Ning Jiang sp. nov.</p><p>Fig. 5.</p><p>Etymology.</p><p>In reference to the host species Castanopsis carlesii .</p><p>Typification.</p><p>China • Guangdong Province: Guangzhou City, Tianhe District, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=113.39&amp;materialsCitation.latitude=23.246666" title="Search Plazi for locations around (long 113.39/lat 23.246666)">Longan Cave Forest Farm</a> (23°14.80'N, 113°23.40'E, alt. 176 m), from trunk of Castanopsis carlesii (Hemsl.), on 23 April 2021, L. Y. Tian (Holotype HMAS 353197, ex-type living culture GDMCC 3.1026) ; • Guangdong, Guangzhou City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=113.39&amp;materialsCitation.latitude=23.23" title="Search Plazi for locations around (long 113.39/lat 23.23)">Longan Cave Forest Farm</a> (23°13.80'N, 113°23.40'E, alt. 176 m), on necrotic trunk of C. carlesii, on 23 April 2021, L. Y. Tian (Paratype HMAS 353198, ex-paratype living culture GDMCC 3.1027) .</p><p>Other specimens examined.</p><p>China • Guangdong, Guangzhou City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=113.39&amp;materialsCitation.latitude=23.23" title="Search Plazi for locations around (long 113.39/lat 23.23)">Longan Cave Forest Farm</a> (23°13.80'N, 113°23.40'E, alt. 247 m), on necrotic trunk base of Castanopsis hystrix, on 23 April 2021, L. Y. Tian (HMAS 353199, living culture GDMCC 3.1028; HMAS 353200, living culture GDMCC 3.1029) .</p><p>Description.</p><p>Asexual morph on PDA and Castanopsis carlesii twigs: Conidiomata stromatic, dark brown to black, solitary, semi-immersed to superficial, unilocular, papillate or apapillate, covered by dark brown mycelium; 530.1 ± 279.5 × 395.8 ± 145.2 μm, 292.2 ± 213.9 μm high (n = 20). Paraphyses interspersed with conidiophores, filiform, hyaline, cylindrical with swollen rounded apices, initially aseptate, becoming 1–7 - septate at maturity, unbranched, extending beyond the conidial layer, up to 59.8 ± 12.0 μm long and 3.2 ± 1.1 μm wide. Conidiophores absent or reduced to conidiogenous cells. Conidiogenous cells holoblastic, hyaline, discrete, smooth, thin-walled, cylindrical to ampulliform, proliferating percurrently, (4.0 –) 8.3 ± 2.2 (– 12.5) × (1.7 –) 3.9 ± 1.1 (– 6.9) μm (n = 20). Conidia initially hyaline, aseptate, thick-walled (wall 1.5–3.2 μm thick), ellipsoid to ovoid with rounded or slightly tapered apices, becoming dark brown, 1 - septate with longitudinal striations at maturity; (20.1 –) 28.1 ± 2.9 (– 33.5) × (9.9 –) 14.5 ± 1.7 (– 16.9) μm (mean ± SD = 28.1 ± 2.9 × 14.5 ± 1.7 μm, n = 200, L/W = 1.9). Conidial dimensions vary on different substrates: on PDA: 25.9 ± 3.6 × 12.5 ± 1.2 μm (n = 50, L/W = 2.1); on inoculated host branches: 28.9 ± 2.1 × 15.4 ± 0.9 μm (n = 50, L/W = 1.9).</p><p>Cultural characteristics.</p><p>Colonies on PDA initially white, turning gray with age, floccose with entire margins, covering the 90 mm Petri dish after 48 h at 25 ° C in the dark; reverse dark gray with black patches; sporulation sparse. On MEA, colonies initially white, becoming fluffy with entire margins, covering the dish after 4 days at 25 ° C; reverse dark gray to yellowish with a rust tint upon aging. On SNA, aerial mycelium scant and fluffy, initially white, becoming gray with age, with entire margins, reaching the edge of the 90 mm dish after 4 days at 25 ° C; reverse gray with black patches; sporulation not observed. On Czapek Dox Agar, colonies initially white, becoming gray with gray-brown tones, fluffy with entire margins, covering the dish after 4 days at 25 ° C.</p><p>Notes.</p><p>Phylogenetically, Lasiodiplodia carlesii forms a distinct and highly supported clade based on the concatenated gene alignment. It is most closely related to L. syzygii but differs by distinct nucleotide substitutions: 6 bp in ITS, 5 bp in tef 1 - α, and 3 bp in tub 2 (Table 3). Morphologically, L. carlesii can be distinguished from L. syzygii by its smaller conidia [(20.1 –) 25.2–31.0 (– 33.5) × (9.9 –) 12.8–16.2 (– 16.9) μm (av. = 28.1 × 14.5 μm, L/W = 1.9)] compared to those of L. syzygii [(24.5 –) 28.0–32.5 (– 39.5) × (13 –) 15–17 (– 21) μm (av. = 30.2 × 16.1 μm, L/W = 1.9)] (Zhang et al. 2021) (Table 4). Both species also differ in cultural characteristics: L. carlesii colonies cover 90 mm PDA plates with regular margins within 3 days at 25 ° C, whereas L. syzygii requires 4 days for full coverage and exhibits irregular margins (Zhang et al. 2021). These combined phylogenetic, morphological, and biological differences support the establishment of L. carlesii as a new species.</p></div>	https://treatment.plazi.org/id/537E4888EA805045AE4CFB5CA39FBF4C	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.		Pensoft via Plazi	Zhang, Yanfeng;Feng, Jinyan;Jiang, Ning;Xu, Jinzhu;Qin, Changsheng;Xu, Fang;Tian, Longyan	Zhang, Yanfeng, Feng, Jinyan, Jiang, Ning, Xu, Jinzhu, Qin, Changsheng, Xu, Fang, Tian, Longyan (2026): Lasiodiplodia carlesii sp. nov. (Botryosphaeriales, Botryosphaeriaceae), a novel pathogen causing canker and dieback on Castanopsis (Fagaceae) plantations in China. MycoKeys 137: 81-102, DOI: 10.3897/mycokeys.137.184738
