Rhizocybe albida (G. Stev.) J.A. Cooper 2015
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Rhizocybe albida (G. Stev.) J.A. Cooper 2015
Rhizocybe albida (G. Stev.) J.A. Cooper 2015
Nomenclature
(G. Stev.) J.A. Cooper
G. Stev.
J.A. Cooper
2015
ICN
species
Rhizocybe albida
Classification
Associations
Descriptions
[GS] Pileus 0.5-2-5 cm. diam., white becoming tinged cream, plane with downrolled margin becoming umbilicate, velvety to fibrillose, somewhat grooved or striate towards margin; flesh thin, white. Gills decurrent, white, thin, shallow, moderately distant to crowded. Stipe 0-5-2 cm. x 1-2 mm., white, centric or eccentric. Spores 5 X 3-4um, non-amyloid (Fig. 1/23, p. 10). Cuticle of loosely woven hyphae 2-5um, diam., with clamp connections, some with thickened walls. HABITAT: on fallen rotting wood or tree fern stipes, arising individually but many close together from a spreading white mycelial mat, with or without white rhizomorphs, Levin, 3.5.1947, Stevenson (type); & Levin, 18.6.1949, Stevenson. [EH] The spores are oval, smooth, neither amyloid nor dextrinoid, thinwalled, without germ-spore, 5-5.5 X 3-3.5 um. Cystidia none. Cuticle consists of cylindrical, hyaline, nongelatinised hyphae, 3-6 um, diam., with clamp-connections. [JAC] Easily distingusihed from Pleurocollybia cremea by funnel-shaped cap, decurrent gills and clamps. P. cremea can also have basal hyphal pad and rhizomoprhs. Sequences of recent material indicate this is a Rhizocybe
Fig. 1 = Clitocybe albida (Stevenson) comb. nov. (Basionym: O. albida Stevenson, Kew Bull. 19: 12, 1964)
The spores are oval, smooth, neither amyloid nor dextrinoid, thin-walled, without germ-spore, 5-5.5 X 3-3.5 µ. Cystidia none. Cuticle consists of cylindrical, hyaline, nongelatinised hyphae, 3-6 µ. diam., with clamp-connections.
[Notes from Kew Type specimen, PRJ 2010] Kew images.
Pileus 0.5-2.5 cm diam., white becoming tinged cream, plane with down rolled margin becoming umbilicate, velvety to fibrillose, somewhat grooved or striate towards margin; flesh thin, white. Gills decurrent, white, thin, hallow moderately distant to crowded. Stipe 0.5-2 cm x 1-2 mm, white, centric or eccentric. Spores 5 x 3-4 µm non-amyloid (Fig. 23), cuticle of loosely woven hyphae 2-5 µm diam., with clamp connections, some with thickened walls.
On fallen rotting wood or tree fern stipes, arising individually but many close together from a spreading white mycelial mat, with or without white rhizomorphs, Levin, 3.5.1947, Stevenson (type); & Levin, 18.6.1949; Stevenson.
Pileus 0.5-2.5 cm diam., albus deinde cremeo-tinctus, planus, margine deorsum involute, tandem umbilicatus, velutinus usque fibrillosus, marginem versus leviter canaliculatus vel striatus; caro tenuis, alba. Lamellae decurrentes, albae, tenues, haud altae, modice distantes usque confertae. Stipes 0.5-2cm x 1-2 mm, albus, centricus vel excentricus. Sporae 5 x 3-4 µm, haud amyloideae. Cuticula ex hyphis laxe intertextis 2-5 µm diam. sistens, cum fibulis hyphis nonnullis cum parietibus incrassatis.
Typus: Stevenson 136.
Taxonomic concepts
Clitocybe albida (G. Stev.) E. Horak (1971)
Clitocybe albida (G. Stev.) E. Horak (1971)
Clitocybe albida (G. Stev.) E. Horak (1971)
Clitocybe albida (G. Stev.) E. Horak (1971)
Clitocybe albida (G. Stev.) E. Horak (1971)
Clitocybe albida (G. Stev.) E. Horak (1971)
Clitocybe albida (G. Stev.) E. Horak (1971)
Omphalina albida G. Stev. (1964)
Collections
Notes
taxonomic status
Sequence data say Clitocybe albida Stevenson (illegit.) is a Rhizocybe
Metadata
dc87daf0-843f-42a5-a8b9-9c029dfae487
scientific name
Names_Fungi
16 February 2015
18 February 2015