identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
E376667BC6895DE795D9EF79C43A28CC.text	E376667BC6895DE795D9EF79C43A28CC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Agaricus aurantifibrillosus P. H. Liu & S. E. Wang 2025	<div><p>Agaricus aurantifibrillosus P. H. Liu &amp; S. E. Wang sp. nov.</p><p>Figs 2 A, B, 3</p><p>Etymology.</p><p>aurantifibrillosus (Latin), referring to the pileus covered with arranged orange (5 A 8) or brownish yellow (5 C 8) fibrillose squamules.</p><p>Holotypus.</p><p>China • Fujian Province, Fuzhou City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=119.27195&amp;materialsCitation.latitude=26.178055" title="Search Plazi for locations around (long 119.27195/lat 26.178055)">Fuzhou National Forest Park</a>, 2 October 2024, 26°10'41"N, 119°16'19"E, alt. 280 m, Shi-En Wang, E 2410232 (FFAAS 3390) .</p><p>Diagnosis.</p><p>This species is characterized by its pileus covered with orange (5 A 8) or brownish yellow (5 C 8) scattered fibrillose squamules, elongate basidiospores (Qav = 1.70), and abundant cheilocystidia.</p><p>Description.</p><p>Pileus 3.6–6.2 cm in diameter, 0.2–0.3 cm thick at the center, truncate conical to plane, surface dry, white (5 A 1) or orange white (5 A 2), covered with scattered arranged orange (5 A 8), brownish yellow (5 C 8) fibrillose squamules, denser at disc, showing brownish orange (6 C 8) or brown (6 E 8), margin appendiculate by annulus remnants. Context of the pileus white (6 A 1), with no special odor. Lamellae 0.2–0.4 cm broad, pastel red (9 A 4) then reddish brown (8 E 8) later brownish black (8 F 8), free, crowded, intercalated with numerous lamellulae. Stipe 5.6–8.6 × 0.4–1.3 cm, hollow, clavate, with white (6 A 1) rhizomorphs, provided with an annulus in its upper third, above the annulus white (6 A 1), below the annulus with white (6 A 1), orange (5 A 8) floccose squamules, becoming dark yellow (4 C 8) on touching or bruising. Annulus superior, white (6 A 1), simple, membranous, easy falling out.</p><p>Basidiospores (4.6) 4.7–5.7 (5.9) × (2.7) 2.8–3.3 (3.6) μm, [Xav = 5.2 × 3.1 μm], Q = 1.50–1.93, Qav = 1.70, ellipsoid to elongate-ellipsoid, smooth, thick-walled, brown, guttulate. Basidia 14–18 × 5–7 μm, clavate, 4 (2) - spored, sterigmata 2–4 µm long. Cheilocystidia abundant, nearly globose, oblong, sphaeropedunculate, or broadly clavate, 12–34 × 10–20 μm, with pale yellowish intracellular pigment. Pleurocystidia absent. Pileipellis a cutis of cylindrical, slightly constricted at the septa, pale yellowish hyphae, 4–9 μm in diameter.</p><p>Habitat and distribution.</p><p>Gregarious or scattered in broad-leaved and bamboo forests during autumn. Currently, it has only been documented in Fujian Province, China.</p><p>Additional specimens measured.</p><p>China • Fujian Province, Fuzhou City, Fujian Agriculture and Forestry University, 5 October 2024, Shi-En Wang, E 2410524 (FFAAS 3391) and E 2410525 (FFAAS 3392) .</p><p>Notes.</p><p>Agaricus aurantifibrillosus belongs to A. (subg. Minores) sect. Minores. Agaricus aurantipileatus T. Bau &amp; S. E. Wang in A. sect. Arvenses shares morphological similarities with A. aurantifibrillosus . However, A. aurantipileatus can be distinguished by its double annulus, smaller spore Q value (Q = 1.17–1.36), and sometimes catenulate cheilocystidia (Wang and Bau 2024).</p><p>In the multi-locus phylogenetic tree (Fig. 1), A. aurantifibrillosus clusters with A. colpeteii T. Lebel and A. wayanadensis, albeit with low statistical support, and this may be due to the lack of sequences in the related taxa. Agaricus colpeteii is a gasteroid Agaricus species with basidia not observed (Lebel 2013). Agaricus wayanadensis differs in having a pileus surface covered with brown squamules and a smaller spore Qav value (Qav = 1.58) (Arya and Pradeep 2024).</p></div>	https://treatment.plazi.org/id/E376667BC6895DE795D9EF79C43A28CC	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	Wang, Shi-en;Chen, Si-ang;Huang, Hai-chen;Lin, Dong-mei;Liu, Peng-hu	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
5F9C3FAFFE6A578FA0225F090B7BFB5A.text	5F9C3FAFFE6A578FA0225F090B7BFB5A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Agaricus fafuinus P. H. Liu & S. E. Wang 2025	<div><p>Agaricus fafuinus P. H. Liu &amp; S. E. Wang sp. nov.</p><p>Figs 2 C, D, 4</p><p>Etymology.</p><p>Derived from the acronym FAFU (Fujian Agriculture and Forestry University), where the type specimens of this species were collected.</p><p>Holotypus.</p><p>China • Fujian Province, Fuzhou City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=119.4&amp;materialsCitation.latitude=26.133333" title="Search Plazi for locations around (long 119.4/lat 26.133333)">Fujian Agriculture and Forestry University</a>, 4 March 2024, 26°08'N, 119°24'E, alt. 30 m, Si-Ang Chen, CSA 299 (FFAAS 3393) .</p><p>Diagnosis.</p><p>This species is characterized by its pileus and stipe covered with brown (7 D 5) or fox red (8 D 7) fibrils or fibrillose squamules, elongate basidiospores (Qav = 1.63), and abundant cheilocystidia.</p><p>Description.</p><p>Pileus 3.4–5.5 cm in diameter, 0.2–0.4 cm thick at the center, truncate conical to plane, surface dry, white (5 A 1), brownish gray (7 C 2), covered with brown (7 D 5) or fox red (8 D 7) fibrils or with fibrillose squamules, concentrically arranged, denser and reddish brown (8 E 8) at disc, margin appendiculate by annulus remnants. Context of the pileus, white (6 A 1), with no special odor. Lamellae 0.2–0.3 cm broad, first pastel red (9 A 4), then reddish brown (8 E 8), later brownish black (8 F 8), free, crowded, intercalated with numerous lamellulae. Stipe 2.2–4.5 × 0.6–1.5 cm, nearly cylindrical, hollow, with white (6 A 1) rhizomorphs, provided with an annulus in its upper half, above the annulus white (6 A 1), below the annulus covered towards the base with concolorous squamules with the pileus surface. Annulus superior, white (6 A 1) to reddish brown (8 E 8), simple, membranous, persistent.</p><p>Basidiospores (5.7) 6.0–7.9 (8.2) × (3.5) 3.7–5.0 (5.1) μm, [Xav = 6.8 × 4.2 μm], Q = 1.46–2.03, Qav = 1.63, ellipsoid to cylindrical, smooth, thick-walled, brown, guttulate. Basidia 17–25 × 6–9 μm, clavate, 4 (2) - spored, sterigmata 1–3 µm long. Cheilocystidia abundant, nearly globose, broadly clavate, or pyriform, 10–23 × 7–13 μm, hyaline. Pleurocystidia absent. Pileipellis a cutis of cylindrical, slightly constricted at septa, light brown hyphae, 6–12 μm wide.</p><p>Habitat and distribution.</p><p>Gregarious in bamboo forests or grass during spring. Currently, it has only been known from Fujian Province, China.</p><p>Additional specimens measured.</p><p>China • Fujian Province, Fuzhou City, Fujian Agriculture and Forestry University, 23 March 2024, Si-Ang Chen, CSA 314 (FFAAS 3394) .</p><p>Notes.</p><p>Agaricus fafuinus belongs to A. (subg. Agaricus) sect. Agaricus. Agaricus fafuinus exhibits variable pileus surface: specimen CSA 299 possesses fibrils, while CSA 314 displays fibrillose squamules. However, molecular data confirm their conspecificity, suggesting that these morphological differences may result from humidity variations. Specimen CSA 299 was collected post-rainfall and likely it was exposed to precipitation, whereas specimen CSA 314 was obtained under dry conditions. Initially, we thought we had mixed up the specimen numbers, but after thorough verification, this turned out to be accurate.</p><p>In the multi-locus phylogenetic tree (Fig. 1), A. fafuinus and A. moellerianus Bon form a sister clade with good support. However, A. moellerianus is distinguished by its subglabrous white pileus, smooth stipe, rounder basidiospores (Qav = 1.22), and broadly clavate cheilocystidia resembling basidioles (Kerrigan 2016).</p></div>	https://treatment.plazi.org/id/5F9C3FAFFE6A578FA0225F090B7BFB5A	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	Wang, Shi-en;Chen, Si-ang;Huang, Hai-chen;Lin, Dong-mei;Liu, Peng-hu	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
9957CD289E14588FA514BE678DB58C09.text	9957CD289E14588FA514BE678DB58C09.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Agaricus shenzhenensis P. H. Liu & S. E. Wang 2025	<div><p>Agaricus shenzhenensis P. H. Liu &amp; S. E. Wang sp. nov.</p><p>Figs 2 E, F, 5</p><p>Etymology.</p><p>shenzhenensis (Latin), meaning from shenzhen city where the holotype specimen was collected.</p><p>Holotypus.</p><p>China • Guangdong Province, Shenzhen City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=114.05361&amp;materialsCitation.latitude=22.556389" title="Search Plazi for locations around (long 114.05361/lat 22.556389)">Lianhuashan Park</a>, 29 April 2024, 22°33'23"N, 114°3'13"E, alt. 100 m, Cheng-Cheng, 20240430 (FFAAS 3397) .</p><p>Diagnosis.</p><p>Distinguished by the pileus adorned with brownish gray (6 E 2) fibrillose squamules, context becoming yellow (3 B 8) on cutting, stipe base tapering and covered with brownish gray (6 E 2) fibrillose squamules, predominantly 2 - spored basidia.</p><p>Description.</p><p>Pileus 2.5–6.5 cm in diameter, 0.5–0.8 cm thick at the center, hemispherical, truncate conical to plane, applanate with a slightly depressed center when mature, surface dry, white (2 A 1), grayish white (2 B 1), entirely covered with appressed, concentrically arranged, triangular, brownish gray (6 E 2) fibrillose squamules, scattered towards the margin in age, denser taupe (4 F 1), black (2 F 1) at the disc, margin entire, appendiculate by annulus remnants. Context of the pileus white (6 A 1), becoming yellow (3 B 8) on cutting, odor unknown. Lamellae 0.5–0.7 cm broad, first pale red (9 A 3) then reddish brown (8 E 8), later brownish black (8 F 8), free, crowded, intercalated with numerous lamellulae. Stipe 4.5–11.5 × 0.5–2.0 cm, cylindrical, tapering downwards, hollow, with short white (6 A 1) rhizomorphs, provided with an annulus in its upper part, above the annulus white (6 A 1), below the annulus the upper half white and the lower half covered with dense adpressed brownish grey (6 E 2) squamules concolorous with the pileus surface. Annulus superior, white (6 A 1) to brownish black (8 F 8), simple, membranous, persistent.</p><p>Basidiospores (5.8) 6.1–7.3 (7.5) × (3.8) 4.0–4.3 (4.4) μm, [Xav = 6.8 × 4.2 μm], Q = 1.41–1.87, Qav = 1.61, ellipsoid to elongate-ellipsoid, smooth, brown, thick-walled, guttulate. Basidia 25–33 × 8–10 μm, clavate, 2 (4) - spored, sterigmata 2–3 µm long. Cheilocystidia abundant, broadly clavate, oblong or pyriform, 22–50 × 10–22 μm. Pleurocystidia absent. Pileipellis a cutis of cylindrical, slightly constricted at the septa, light brown hyphae, 4–7 μm wide.</p><p>Habitat and distribution.</p><p>Gregarious or clustered in grass or broad-leaved forests during spring. Currently, it is only known from Guangdong Province, China.</p><p>Additional specimens measured.</p><p>China • Guangdong Province, Shenzhen City, Lianhuashan Park, 29 April 2024, Cheng-Cheng, 20240430-1 (FFAAS 3398) .</p><p>Notes.</p><p>Agaricus shenzhenensis belongs to A. (subg. Pseudochitonia) sect. Catenulati, which currently comprises three species: A. arabiensis S. Hussain &amp; Al-Sadi, A. lannaensis N. Suwannarach, J. Kumla &amp; S. Lumyong and A. malakandensis .</p><p>Agaricus shenzhenensis differs from all three in both morphological and molecular characters. Agaricus arabiensis exhibits a reddish-brown to dark reddish-brown pileus, context unchanged on handling, smooth stipe, and globose to subglobose or broadly clavate, regularly catenulate cheilocystidia (Hussain et al. 2022). Agaricus lannaensis differs in having brown pileus, reddish brown context when cut, fibrillose stipe white below the annulus to the base, and smaller basidia (19–26 × 5.5–8.5 µm) (Jaichaliaw et al. 2021). Agaricus malakandensis possesses a dark brown to reddish brown pileus, smooth or fibrillose to slightly squamulose stipe, and multiseptate cheilocystidia with clavate to pyriform terminal element (Nawaz et al. 2024). Notably, catenulate cheilocystidia were not observed in this species, even though this feature is the primary morphological diagnostic characteristic for taxa within this section.</p><p>The genetic distinctions between A. shenzhenensis and A. malakandensis remain unequivocal, with four nucleotide differences in the ITS region, one in nrLSU, and four in tef 1 - α (Table 2). To ensure the accuracy of the results, we rechecked the quality of the sequences and confirmed their compliance with the required standards.</p><p>Notably, this species represents the first record of A. sect. Catenulati in China, expanding the known biogeographic range of this section.</p></div>	https://treatment.plazi.org/id/9957CD289E14588FA514BE678DB58C09	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	Wang, Shi-en;Chen, Si-ang;Huang, Hai-chen;Lin, Dong-mei;Liu, Peng-hu	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
