identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03FC87D9FF84E512FA45F957FDF3967C.text	03FC87D9FF84E512FA45F957FDF3967C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Chlorophyllum tenue E. Falcao, Ferretti-Cisn., Silva-Filho, Koroiva & Wartchow 2025	<div><p>Chlorophyllum tenue E.Falcão, Ferretti-Cisn., Silva-Filho, Koroiva &amp; Wartchow sp. nov.</p><p>MycoBank MB 855028</p><p>Figs 2–4</p><p>Diagnosis</p><p>The species is characterized by the delicate basidiome, light brown to pinkish beige furfuraceous squamules on a light gray to dark cream brown background, cylindrical and slightly radicant stipe, ellipsoid basidiospores 8.7–9.7(–10.7) × 5.6–6.6 µm, 4-spored basidia, slender clavate-subcapitate cheilocystidia, and pileus covering elements varying from broadly clavate, clavate to slender clavate sinuous.</p><p>Etymology</p><p>From the Latin adjective tenuis, e = slender, thin, delicate, due to the slender basidiome of the new species.</p><p>Type material</p><p>Holotype</p><p>BRAZIL – Paraíba • São José dos Cordeiros; “ <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-36.905003&amp;materialsCitation.latitude=-7.4791665" title="Search Plazi for locations around (long -36.905003/lat -7.4791665)">RPPN Fazenda Almas” [Private Reserve of Natural Patrimony Fazenda Almas</a>]; 7°28′45″ S, 36°54′18″ W; 26 Feb. 2019; A.G.S. Silva-Filho AGS 09-2019; solitary on soil among litter in vegetation of Caatinga Biome; JPB [66971].</p><p>Description</p><p>Basidiome small, slender, lepiotoid. Pileus 42 mm plane-umbonate, surface squamulose, with a distinct reddish brown (OAC 733) umbo breaking up into small appressed scales, light brown (OAC 688) to rosy beige (OAC 689) irregularly shaped, radially oriented, scattered and detersile toward the margin; surface/background light grayish brown to dark cream (OAC 722, 718); margin striated; surface more densely packed toward central disk; context very thin, fragile. Lamellae free, white (OAC 909), subclose, up to 5 mm broad, lamella-edge slightly eroded to smooth, concolorous to side; lamellulae common, of 3 lengths. Stipe 42 × 3 mm, central cylindrical, equal, radicant; whitish to light brown (OAC 909/ 801) to dark ochraceous brown (OAC 796), unchanging when injured; surface squamulose towards the apex, then glabrous and striate bellow the ring; ring with median to slightly superior position, thin with double edge; context white (OAC 909), hollow.</p><p>Basidiospores 8.7–9.7(–10.7) × 5.6–6.6 µm, Q = 1.43–1.64, Qm = 1.47, ellipsoid in side view, thin to slightly thick-walled, hyaline, dextrinoid, cyanophilous, metachromatic; germ pore absent. Basidia (19.4–)21.9–24(–27.5) × 8.7–10.7 µm, clavate, hyaline, 4-spored; sterigmata up to 5 µm high. Pleurocystidia absent. Lamella edge sterile, with abundant heterogeneous cheilocystidia. Cheilocystidia 24–27.5 × 5.1–8.2 µm, slender clavate to sometimes broadly capitate, hyaline, thin-walled. Lamella trama regular to subregular, composed by hyphae (3.5–)4.6–5.6 µm in diam., colorless, thin-walled. Pileus covering a hymeniderm with ellipsoid, broadly clavate to sinuously slender clavate terminal elements, pale to brownish pigmented, measuring (11.2–)27.5–34.7(–51) × 6.6–9.7(–14.8) µm, thin-walled. Clamp connections absent from all examined tissues.</p><p>Distribution</p><p>Known only from the type locality.</p></div>	https://treatment.plazi.org/id/03FC87D9FF84E512FA45F957FDF3967C	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	Falcão, Erica S.;Ferretti-Cisneros, Nathalia U.;Silva-Filho, Alexandre G. S.;Koroiva, Ricardo;Wartchow, Felipe	Falcão, Erica S., Ferretti-Cisneros, Nathalia U., Silva-Filho, Alexandre G. S., Koroiva, Ricardo, Wartchow, Felipe (2025): Chlorophyllum tenue sp. nov. (Agaricaceae, Basidiomycota) from the Brazilian Caatinga semiarid region. European Journal of Taxonomy 976: 182-193, DOI: 10.5852/ejt.2025.976.2787, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2787/12741
03FC87D9FF80E512FBF2FAAFFADD94C1.text	03FC87D9FF80E512FBF2FAAFFADD94C1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Chlorophyllum (sect. Ellipsoidospororum)	<div><p>Key for identification of the species of Chlorophyllum sect. Ellipsoidospororum (Ge et al. 2018; Dutta et al. 2020; Loizides et al. 2020; this work)</p><p>1. Light brown to yellow-brown irregular patches on white to light orange pileus ............................. 2</p><p>– Furfuraceous squamules arranged on white to light grayish brown or dark cream pileus ............... 3</p><p>2. Basidia 2-spored; widely distributed (Africa, Asia and Americas) .... C. hortense (Murrill) Vellinga</p><p>– Basidia 4-spored; restricted to Southeast Asia................ C. demangei (Pat.) Z.W.Ge &amp; Zhu L.Yang</p><p>3. Pileus with grey to grey orange furfuraceous squamules on white ground; stipe subcylindrical then slightly enlarged at base, white to light brown, turning brown to red where bruised or handled; annulus simple; cheilocystidia 28–50 × 6–10 µm; pileus covering formed by hymenidermic layer made up of clavate slightly thick-walled elements, with terminal elements mostly narrowly clavate ........................................................................................... C. africanum Z.W.Ge &amp; A.Jacobs</p><p>– Pileus with reddish brown, light brown to rosy beige squamules on grayish brown to dark cream ground; stipe cylindrical-equal, radicant, not changing color when bruised, annulus upper central, double, thin, white to light brown, cheilocystidia 24–27.5 × 5.1–8.2 µm; pileus covering elements versiform (broadly clavate, clavate to slender clavate sinuous)............................... C. tenue sp. nov.</p></div>	https://treatment.plazi.org/id/03FC87D9FF80E512FBF2FAAFFADD94C1	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	Falcão, Erica S.;Ferretti-Cisneros, Nathalia U.;Silva-Filho, Alexandre G. S.;Koroiva, Ricardo;Wartchow, Felipe	Falcão, Erica S., Ferretti-Cisneros, Nathalia U., Silva-Filho, Alexandre G. S., Koroiva, Ricardo, Wartchow, Felipe (2025): Chlorophyllum tenue sp. nov. (Agaricaceae, Basidiomycota) from the Brazilian Caatinga semiarid region. European Journal of Taxonomy 976: 182-193, DOI: 10.5852/ejt.2025.976.2787, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2787/12741
