identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
67B4C04347015BB5A4AE91FD1F223E2C.text	67B4C04347015BB5A4AE91FD1F223E2C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cortinarius acuticonus Y. W. Yang, Y. Zhang & Q. Zhao 2026	<div><p>Cortinarius acuticonus Y. W. Yang, Y. Zhang &amp; Q. Zhao sp. nov.</p><p>Fig. 3</p><p>Chinese name.</p><p>细锥鳞丝膜菌 (xi zhui lin si mo jun).</p><p>Etymology.</p><p>“ acuticonus ” refers to the acutely conical shape of the pileus.</p><p>Holotype.</p><p>China • Yunnan Province: Dali, Yongping County, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.886345&amp;materialsCitation.latitude=25.32145" title="Search Plazi for locations around (long 99.886345/lat 25.32145)">Jinguangsi Nature Reserve</a> at 25.321450°N, 99.886342°E, alt. 2449 m, in Castanopsis spp. forest, 8 Jul. 2009, JGS-15-03 (KUN-HKAS 151741).</p><p>Diagnosis.</p><p>Cortinarius acuticonus differs from C. nigrosquamosus by its acutely conical pileus entirely lacking olive tinges, covered with much finer and more densely arranged black, Strobilomyces - like scales, a distinct membranous annulus on the stipe, and broadly ellipsoid to ellipsoid basidiospores (6–8.5 × 4.5–6.5 μm). Molecularly, it is distinguished by 13 significant base-pair differences in the sequence alignment.</p><p>Macrostructures.</p><p>Basidiomata medium-sized. Pileus 2–4 cm diam., initially acutely conical, becoming hemispherical to applanate with age; surface reddish brown (8 E 4) at the disc, fading to reddish grey (7 B 2) towards the margin, entirely covered with black (G 1) scales resembling Strobilomyces. Context 2–6 mm thick, brown (7 E 5). Lamellae adnexed, 3–5 mm broad, moderately crowded, unequal, greyish yellow (4 C 5) to yellowish brown (5 D 6); edge undulating. Stipe 40–70 × 5–10 mm, clavate, base slightly bulbous; surface pale yellow (4 A 3) at the apex, brown (6 C 5) to brownish orange (6 E 4) in the middle, becoming paler downwards, covered with black (G 1) fibrils, with a membranous annulus; longitudinally striate. Basal mycelium yellowish white (2 A 2), distinctive.</p><p>Microstructures.</p><p>Basidiospores [90 / 3 / 3] (6 –) 6.5–8 (– 8.5) × (4.5 –) 5–6 (– 6.5) μm [Q = (1.05 –) 1.15–1.47 (– 1.55), Q = 1.3 ± 0.1], broadly ellipsoid to ellipsoid, cinnamon in 10 % KOH, light orange-brown, and distinctly verrucose. Basidia 20–38 × 5.5–9 μm, clavate, thin-walled, mostly subhyaline, 4 - spored, colorless or with yellowish contents. Lamella trama hyphae 4.5–6.5 μm diam., smooth, colorless. Lamella edges heterogeneous, with sterile cells, 17–23.5 × 5–7 μm, clavate, subhyaline. Pleurocystidia absent. Pileipellis duplex: epicutis well developed, hyphae interwoven, with some ascending fascicles, 5.5–14.5 μm diam., cylindrical, colorless or with greyish-black pigment; Hypodermium composed of uniform, moniliform, tightly interwoven, hyaline cells, hyphae 7–21 μm diam. Stipe hyphae 7.5–13 μm diam., colorless, smooth. Clamp connections present.</p><p>Habitat.</p><p>Scattered or gregarious on the ground in Castanopsis orthacantha forest.</p><p>Distribution.</p><p>Known from the western Yunnan Province, China.</p><p>Additional material examined.</p><p>China • Yunnan Province: <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.86026&amp;materialsCitation.latitude=25.351004" title="Search Plazi for locations around (long 99.86026/lat 25.351004)">Dali</a>, Yongping County, Jinguangsi Nature Reserve at 25.351003°N, 99.860261°E, alt. 2490 m, in Castanopsis orthacantha forest, 8 Sep. 2009, JGS-27-11 (KUN-HKAS 151742) ; China • Yunnan Province: <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.886345&amp;materialsCitation.latitude=25.32145" title="Search Plazi for locations around (long 99.886345/lat 25.32145)">Dali</a>, Yongping County, Jinguangsi Nature Reserve at 25.321450°N, 99.886342°E, alt. 2449 m, in Castanopsis orthacantha forest, 5 Aug. 2009, JGS-18-17 (KUN-HKAS 151743) .</p><p>Notes.</p><p>Cortinarius acuticonus is a striking species that is easily recognized in the field, characterized by an acutely conical pileus densely covered with black, Strobilomyces - like scales, a distinct membranous annulus on the stipe, and broadly ellipsoid to ellipsoid basidiospores (6–8.5 × 4.5–6.5 μm). Morphologically, it can be easily confused with C. nigrosquamosus . The latter is another dark-scaled species previously recorded in Shangri-La Pudacuo National Park and discussed in recent comprehensive studies of the genus Cortinarius in China (Xie 2022). However, C. acuticonus can be distinguished from C. nigrosquamosus by the absence of an olive tinge on its pileus surface. Additionally, the scales on the pileus of C. acuticonus are finer and more densely arranged than those of C. nigrosquamosus . At the molecular level, sequence alignment between C. acuticonus and C. nigrosquamosus reveals 13 significant base-pair differences, providing strong evidence for recognizing C. acuticonus as a distinct species. Furthermore, the collection sites for C. acuticonus have an average elevation of 2460 m, which is lower than the 3500 m for C. nigrosquamosus . This altitudinal difference may be a contributing factor to the morphological and molecular divergences observed between the two species.</p></div>	https://treatment.plazi.org/id/67B4C04347015BB5A4AE91FD1F223E2C	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	Yang, Yi-Wen;Zhao, Qi;Zhang, Ying	Yang, Yi-Wen, Zhao, Qi, Zhang, Ying (2026): Morphology and multi-locus phylogeny reveal three new Cortinarius (Cortinariaceae, Agaricales) species from northwestern Yunnan, China. MycoKeys 134: 341-361, DOI: 10.3897/mycokeys.134.197559
5049F896E7865EC7AE3FA8CD4FFBB148.text	5049F896E7865EC7AE3FA8CD4FFBB148.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cortinarius tricholomopsoides Y. W. Yang, Y. Zhang & Q. Zhao 2026	<div><p>Cortinarius tricholomopsoides Y. W. Yang, Y. Zhang &amp; Q. Zhao sp. nov.</p><p>Fig. 4</p><p>Chinese name.</p><p>拟口蘑丝膜菌 (ni kou mo si mo jun).</p><p>Etymology.</p><p>“ tricholomopsoides ” refers to the resemblance of this new species to the genus Tricholomopsoides.</p><p>Holotype.</p><p>China • Yunnan Province: Lijiang City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.719086&amp;materialsCitation.latitude=26.631426" title="Search Plazi for locations around (long 99.719086/lat 26.631426)">Laojunshan Nature Reserve</a>, at 26.631426°N, 99.719085°E, alt. 3960 m, in Abies forest, 26 Jul. 2018, LJ 1334 (KUN-HKAS 151739).</p><p>Diagnosis.</p><p>Cortinarius tricholomopsoides is macromorphologically reminiscent of the European species C. cotoneus due to its tomentose to squamulose pileal surface but can be distinctively separated by its pale yellow to light brown pileal coloration entirely lacking olivaceous pigments throughout the basidiocarp, the presence of greyish-orange squamules on the stipe surface, and its negligible odor, slightly smaller, narrower basidiospores (7–9 × 6–7.5 µm).</p><p>Macrostructures.</p><p>Basidioma large-sized. Pileus 5–10 cm diam., initially hemispherical, becoming applanate; surface initially pastel yellow (3 A 4), becoming light brown (7 D 5), covered with light-brown (7 D 5) squamules, dense at the disc, sparse towards the margin; context 1–4 mm thick, yellowish white (1 A 2). Lamellae adnexed, 5–7 mm broad, moderately crowded, unequal, greyish yellow (1 B 3); edge entire. Stipe 80–120 × 8–20 mm, cylindrical, tapering upwards; surface greyish yellow (2 B 3), covered with greyish orange (5 B 6) fibrillose squamules, with a cortinate annular zone, longitudinally striate. Basal mycelium white (A 1). Odor not distinctive.</p><p>Microstructures.</p><p>Basidiospores [60 / 2 / 2] (7 –) 7.5–9 (– 9.5) × (6 –) 6.5–7.5 (– 8) μm [Q = (1.04 –) 1.08–1.4 (– 1.51), Q = 1.24 ± 0.09], subglobose to ellipsoid, cinnamon in 10 % KOH, light brownish yellow, and distinctly verrucose. Basidia 26.5–46.5 × 5.5–10.5 μm, clavate, thin-walled, mostly subhyaline, 4 - spored. Lamella edges heterogeneous, with sterile cells, 16–26 × 5.5–8.5 μm, clavate, subhyaline, thin-walled. Lamella trama, colorless or with yellowish contents, hyphae 4.5–6.5 μm diam. Pleurocystidia absent. Pileipellis duplex: epicutis well developed, hyphae interwoven, with some ascending fascicles, 4.5–12 μm diam., cylindrical, colorless or with yellowish contents; hypocutis composed of cylindrical, strongly interwoven, colorless or with yellowish contents, hyphae 5.5–9 μm diam. Stipe hyphae 8.5–12.5 μm diam., colorless, smooth. Clamp connections present.</p><p>Habitat.</p><p>Scattered or gregarious on the ground in the Abies forest.</p><p>Distribution.</p><p>Known from the Northwestern Yunnan Province, China.</p><p>Additional material examined.</p><p>China • Yunnan Province: Lijiang City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.719086&amp;materialsCitation.latitude=26.631426" title="Search Plazi for locations around (long 99.719086/lat 26.631426)">Laojunshan Nature Reserve</a>, at 26.631426°N, 99.719085°E, alt. 3960 m, in Abies forest, 27 Aug. 2018 LJ 1727 (KUN-HKAS 151740) .</p><p>Notes.</p><p>Cortinarius tricholomopsoides is morphologically reminiscent of C. cotoneus, both species characterized by tomentose to squamulose pileal surfaces. However, C. cotoneus displays characteristic olivaceous to brownish-olivaceous pigmentation throughout the basidiocarp and produces a pronounced raphanoid odor (Bidaud et al. 2021). Conversely, C. tricholomopsoides has pale yellow to light brown pileal coloration with grayish-orange squamulation on the stipe surface while exhibiting negligible olfactory characteristics. Additionally, the stipe of C. cotoneus is typically clavate to bulbous, whereas C. tricholomopsoides has a cylindrical stipe that tapers upward. Microscopically, C. cotoneus generally possesses slightly larger and broader basidiospores (typically 8–9.5 × 7–8 µm) compared to those of C. tricholomopsoides (7–9 × 6–7.5 µm).</p></div>	https://treatment.plazi.org/id/5049F896E7865EC7AE3FA8CD4FFBB148	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	Yang, Yi-Wen;Zhao, Qi;Zhang, Ying	Yang, Yi-Wen, Zhao, Qi, Zhang, Ying (2026): Morphology and multi-locus phylogeny reveal three new Cortinarius (Cortinariaceae, Agaricales) species from northwestern Yunnan, China. MycoKeys 134: 341-361, DOI: 10.3897/mycokeys.134.197559
4916A536EEB45FF3A7351044BE466639.text	4916A536EEB45FF3A7351044BE466639.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cortinarius wudihuensis Y. W. Yang, Y. Zhang & Q. Zhao 2026	<div><p>Cortinarius wudihuensis Y. W. Yang, Y. Zhang &amp; Q. Zhao sp. nov.</p><p>Fig. 5</p><p>Chinese name.</p><p>无底湖丝膜菌 (wu di hu si mo jun).</p><p>Etymology.</p><p>“ wudihuensis ” refers to the type locality, Wudi Lake, a famous lake in Shangri-La City, China.</p><p>Holotype.</p><p>China • Yunnan Province: Shangri-La City, Potatso National Park, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.97771&amp;materialsCitation.latitude=28.249443" title="Search Plazi for locations around (long 99.97771/lat 28.249443)">Wudi Lake</a> at 28.249444°N, 99.977709°E, alt. 3850.3 m, in Quercus aquifolioides forest, 8 Aug. 2025, Zyue-121 (KUN-HKAS 151738).</p><p>Diagnosis.</p><p>Cortinarius wudihuensis is macromorphologically most similar to C. microalbocyaneus, described from Northeast China, due to its small- to medium-sized basidiomata and a shared color transition from violaceous to brownish tones. However, C. wudihuensis can be distinctively distinguished by its slightly larger basidiospores (7–9 × 5.5–7 μm), a brown pileus covered with white fibrils that tends to crack with age, and a stipe featuring a distinct brown ring-like zone.</p><p>Macrostructures.</p><p>Basidioma small- to medium-sized. Pileus 1–3 cm diam., initially hemispherical, becoming applanate; surface initially brown (7 D 7) covered with white (A 1) fibrillose, becoming light brown (7 D 6), covered with light brown (7 D 6) squamules, surface prone to cracking; context 1–6 mm thick, marbled with dull violet (15 D 4) and pale violet (15 A 3). Lamellae adnexed, 2–4 mm broad, moderately crowded, unequal, dull violet (15 D 4) to pasted violet (15 A 4); edge entire. Stipe 20–50 × 7–12 mm, slightly thickened at the base, surface white, upper part with greyish violet (15 E 6) tinges, a brown (7 C 4) ring-like zone at the middle to upper part, internal part somewhat hollow. Basal mycelium white (A 1). Universal veil white. Odor not distinctive.</p><p>Microstructures.</p><p>Basidiospores [60 / 2 / 2] (6 –) 7–9 × (5 –) 5.5–7 (– 7.5) μm [Q = (1.01 –) 1.06–1.37 (– 1.43), Q = 1.21 ± 0.1], subglobose to ellipsoid, cinnamon in 10 % KOH, reddish brown, and distinctly verrucose. Basidia 28.5–44 × 6.5–12 μm, clavate, thin-walled, mostly subhyaline, 4 - spored. Lamella edges heterogeneous, with sterile cells, 21–29 × 7–8 μm, densely arranged, clavate, subhyaline, thin-walled. Lamella trama, colorless, hyphae 3–4.5 μm diam. Pleurocystidia absent. Pileipellis duplex: epicutis thinly to moderately developed, hyphae interwoven, yellowish to yellowish brown hyphae, 3.5–5.5 μm wide, smooth to slightly encrusted; hypocutis well developed, hyphae 5–7 μm wide, hyaline or slightly yellowish brown. Stipe hyphae 4–5.5 μm diam., colorless, smooth. Veil hyphae, 6–9.5 μm diam. Clamp connections present.</p><p>Habitat.</p><p>Scattered or gregarious on the ground in the Quercus aquifolioides forest.</p><p>Distribution.</p><p>Known from the Northwestern Yunnan Province, China.</p><p>Additional material examined.</p><p>China • Yunnan Province: Shangri-La City, Potatso National Park, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.97767&amp;materialsCitation.latitude=28.249435" title="Search Plazi for locations around (long 99.97767/lat 28.249435)">Wudi Lake</a> at 28.249436°N, 99.977669°E, alt. 3867.4 m, in Quercus aquifolioides forest, 8 Aug. 2025, XDY-107 (KUN-HKAS 151737) .</p><p>Notes.</p><p>Cortinarius wudihuensis is characterized by its small to medium-sized basidiomata, a brown pileus covered with white fibrils that tends to crack with age, and a stipe featuring a distinct brown ring-like zone. Morphologically, it is most similar to C. microalbocyaneus, described from Northeast China (Xie et al. 2025). Both species share small basidiospores and a similar color transition from violaceous to brownish tones. However, C. wudihuensis can be distinguished by its slightly larger basidiospores (7–9 × 5.5–7 μm vs. 6.8–7.2 × 5.8–6.2 μm in C. microalbocyaneus) and its specific habitat in Shangri-La, potentially associated with Quercus aquifolioides . Phylogenetically, it belongs to sect. Anomali, where many small-sized species show high morphological convergence.</p></div>	https://treatment.plazi.org/id/4916A536EEB45FF3A7351044BE466639	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	Yang, Yi-Wen;Zhao, Qi;Zhang, Ying	Yang, Yi-Wen, Zhao, Qi, Zhang, Ying (2026): Morphology and multi-locus phylogeny reveal three new Cortinarius (Cortinariaceae, Agaricales) species from northwestern Yunnan, China. MycoKeys 134: 341-361, DOI: 10.3897/mycokeys.134.197559
