identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
B8B0CBFD01DD563B833DF928E496A5AC.text	B8B0CBFD01DD563B833DF928E496A5AC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Leucoagaricus bailangshanensis J. Z. Xu 2025	<div><p>Leucoagaricus bailangshanensis J. Z. Xu sp. nov.</p><p>Fig. 2</p><p>Diagnosis.</p><p>Leucoagaricus bailangshanensis differs from La. centrobrunneolus by pileus margin with floccules, longer sterigmata (3.5 µm), and distinctive ITS, nrLSU, rpb 2, and tef 1 - α sequences and position in the phylogram.</p><p>Holotype.</p><p>China • Liaoning Province, Huludao City, Bailangshan National Nature Reserve, on soil, 8 August 2023, J. Z. Xu (HMJU 9098, holotype) .</p><p>Etymology.</p><p>The epithet “ bailangshanensis ” refers to the location ‘ Bailang shan of Liaoning Province, where the holotype was collected.</p><p>Description.</p><p>Pileus 33–48 mm diam, ranging from plano-convex to convex, pale grayish-white to snow-white (28 B 1-28 A 1), with an irregular margin exhibiting remnants of the partial veil, surface arid, bearing imbricate squamules and radiating white fibrillose vestiges; umbo slightly obtuse, vinaceous yellow (4 B 4) centrally positioned, becoming radially fissured from the pileus center upon maturation. Context white, non-discoloring when bruised, thin. Lamellae free, cream-white (1 A 2) to white (1 A 1), crowded, less than 1 mm in width, with 1–3 tiers of lamellulae; edge entire. Stipe 41–54 × 3–5 mm, birch bark (6 B 2), hollow, covering white fibrillose. Annulus superior and single-layered white (1 A 1) on the upper stipe. Odor not distinctive. Spore print white.</p><p>Basidiospores [40 / 4 / 2] (3.6 –) 4.7–5.6 – 6.4 (– 6.9) × (2.8 –) 3.1–3.9 – 4.5 (– 4.8) µm, Q = 1.2–1.8, Qm = 1.40, broadly ellipsoid to slightly elongated, without a germ pore, transparent in 3 % KOH, dextrinoid, with 1 or 2 guttules. Basidia (12 –) 13–14.8 – 17 (– 17.7) × (5.0 –) 6.5–7.3 – 8.1 (– 8.7) µm, 2–4 spored, broadly clavate, hyaline in KOH; sterigmata up to 3.5 µm long. Cheilocystidia (23.1 –) 23.4–29.4 – 37.4 (– 39.4) × (7.3 –) 9.0–11.4 – 13.7 (– 15.0) μm, subfusiform to fusiform, smooth and hyaline KOH. Pleurocystidia absent. Lamellatrama regular, made up of parallel to subparallel, 2.6–8.1 μm wide hyphae in KOH. Pileipellis a cutis of repent, subcylindrical, radially arranged, occasionally branched, trichodermal, hyphae 3.6–14.2 wide. Clamp connections absent.</p><p>Habitat.</p><p>Solitary on soil in deciduous broadleaf forests.</p><p>Known distribution.</p><p>Known only from north-eastern China.</p><p>Additional material examined.</p><p>China • Liaoning Province, Huludao City, Bailangshan National Nature Reserve, on soil, 8 August 2023, J. Z. Xu (HMJU 9304) ; China • Jilin Province, Jilin City, Zuojia Nature Reserve on soil, 22 September 2023, J. Z. Xu (HMJU 9842) .</p><p>Notes.</p><p>The species is characterized by a pileus with a vinaceous, yellow umbo and white squamules radially arranged over a white background, crowded lamellae, a pileus margin with floccules, and cheilocystidia subfusiform to fusiform; and ITS, nrLSU, rpb 2, tef 1 - α sequence analyses, the present species clusters with members of the La. centrobrunneolus, signifying its position. Regarding overall morphology, the present specimen is quite similar to La. centrobrunneolus, La. lateritiopurpureus, La. Goossensiae Heinem, Leucoagaricus fuligineus Pegler, Leucoagaricus griseus Heinem, and La. luteocanus . However, La. centrobrunneolus has a much smaller pileus (20 mm) with its surface covered without floccules; smaller sterigmata (1.5 µm) (Li et al. 2025). The pileus of La. lateritiopurpureus (10–20 mm) is covered with pink-brownish, brightly orange-brown, or terracotta scales, and much bigger basidia (20–25 × 7–10 µm) (Malysheva et al. 2013). La. goossensiae and La. bailangshanensis differ in that the pileus is reddish-brown, smoother, and with radiating grooves; and the stipe is longer (Heinemann 1973). Leucoagaricus fuligineus has a pileus the center of which is grayish-brown; the hyphae of the pileipellis are grayish-brown; basidia are bigger; and spores are concave (Pegler 1977). Leucoagaricus griseus has a pileus, the center of which is dark gray, with much larger basidia and lanceolate cheilocystidia (Heinemann 1979). Leucoagaricus luteocanus has a pileus the center of which is light brown, with radial light-brown to pale-yellow squamulose or fibrillose; the stipe has uneven brown coloration.</p></div>	https://treatment.plazi.org/id/B8B0CBFD01DD563B833DF928E496A5AC	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, An-Qi;Jin, Ri;Zhang, Xue-chao;Tarafder, Entaj;Xu, Ji-Ze	Zhang, An-Qi, Jin, Ri, Zhang, Xue-chao, Tarafder, Entaj, Xu, Ji-Ze (2025): Two new species of genus Leucoagaricus and Leucocoprinus (Agaricaceae, Agaricales) from China. MycoKeys 125: 33-49, DOI: 10.3897/mycokeys.125.160410
1151C4BA1D5C5CA9B2CC0F37AE06F658.text	1151C4BA1D5C5CA9B2CC0F37AE06F658.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Leucocoprinus ferrugineus J. Z. Xu 2025	<div><p>Leucocoprinus ferrugineus J. Z. Xu sp. nov.</p><p>Fig. 3</p><p>Diagnosis.</p><p>Leucocoprinus ferrugineus differs from Lc. purpurascens by the absence of cheilocystidia, basidiospores amygdaliform, smaller basidia (14.7 – 21.5 × 6.4–9.5 µm) (Guo et al. 2023) and distinctive ITS, nrLSU, rpb 2, and tef 1 - α sequences and position in the phylogram.</p><p>Holotype.</p><p>China • Nei Mongol, Hinggan League City, Arxan National Forest Park, on soil, 1 September 2020, J. Z. Xu (HMJU 745, holotype) .</p><p>Etymology.</p><p>The species epithet “ ferrugineus ” is derived from the Latin word “ ferruginous ”, referring to the ferruginous red pileus at the center of the taxon.</p><p>Description.</p><p>Pileus 12–35 mm diam, convex-lens, mahogany-red (8 E 7) blunt umbo at center and small mahogany-red (8 E 7) squamules in white base color; margin uneven oxide-red (8 E 8). Context white, discoloring to oxide red (8 E 8) when bruised, thick. Lamellae free, white with densely radiating tomato-red (8 C 8) spots, less than 1 mm in width with 1–3 tiers of lamellulae; edge entire. Stipe 35–50 × 2–3 mm, cylindrical with a swollen base, white in the lower part, gradually deepening to fox (8 D 7). Annulus at the upper middle portion of the stipe, white, with a mahogany-red (8 E 7) margin.</p><p>Basidiospores [40 / 4 / 2] (5.9 –) 6.8–7.5 – 8.5 (– 8.9) × (4.1 –) 4.3–4.9 – 5.6 (– 6.2) µm, Q = 1.4–1.9, Qm = 1.54, broadly ellipsoid to slightly elongated, without germpore, transparent in 3 % KOH, dextrinoid, with 1 or 2 guttules. Basidia (13.1 –) 14.7–18.1 – 21.5 (– 21.8) × (6.3 –) 6.4–7.9 – 9.5 (– 10.4) µm, 2–4 spored, broadly clavate; sterigmata up to 2.5 µm long, hyaline in KOH. Cheilocystidia (28.0 –) 34.0–44.7 – 59.8 (– 71.2) × (11.1 –) 12.2–16.5 – 21.3 (– 28.2) µm, capitate to subcapitate, smooth and hyaline in KOH. Pleurocystidia absent. Lamellatrama regular, made up of parallel to subparallel, 3.26–12.53 μm wide, hyaline in KOH. Pileipellis a cutis of repent, subcylindrical, radially arranged, occasionally branched, trichodermal, seen hyphae 3.0–13.5 μm wide, transparent in 3 % KOH. Clamp connections absent.</p><p>Habitat.</p><p>Solitary on the soil in coniferous-broadleaf mixed forest.</p><p>Known distribution.</p><p>Known only from north-eastern China.</p><p>Additional material examined.</p><p>Nei Mongol • Hinggan League City, Arxan National Forest Park, on soil, 1 September 2020, J. Z. Xu. (HMJU 898)</p><p>Notes.</p><p>The species is characterized mainly by mahogany-colored squamules at the center, stipe fox-brown in median to lower portions, deepening in color toward the base, annulus white with a mahogany-colored margin, context turns oxide red upon injury, and the spores are ellipsoid and ITS, nrLSU, rpb 2, tef 1 - α sequence analyses, the present species cluster with members of the Lc. beijingensis and Lc. purpurascens signifies its position. Among morphologically related species, the present specimen is somewhat similar to species such as Lc. purpurascens, Leucocoprinus lahorensis Asif, Saba &amp; Vellinga, Leucocoprinus antillarum Justo, Bizzi, Angelini, Leucocoprinus brunneocanus, Leucocoprinus brunneus . Among morphologically related taxa, Lc. purpurascens differs in lacking cheilocystidia and pileipellis hyphae, which are typically yellowish-brown (Guo et al. 2023). Leucocoprinus antillarum has larger spores, cheilocystidia that are subfusiform, and basidiomata that are uniformly white. Leucocoprinus brunneocanus Asif, Saba &amp; Vellinga has gray squamules of pileus; context un-discoloring when bruised; and cheilocystidia sometimes constricted or curved (Asif 2024). Leucocoprinus brunneus differs by having a thicker stipe; cheilocystidia are smaller and clavate.</p></div>	https://treatment.plazi.org/id/1151C4BA1D5C5CA9B2CC0F37AE06F658	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, An-Qi;Jin, Ri;Zhang, Xue-chao;Tarafder, Entaj;Xu, Ji-Ze	Zhang, An-Qi, Jin, Ri, Zhang, Xue-chao, Tarafder, Entaj, Xu, Ji-Ze (2025): Two new species of genus Leucoagaricus and Leucocoprinus (Agaricaceae, Agaricales) from China. MycoKeys 125: 33-49, DOI: 10.3897/mycokeys.125.160410
