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 Inocybe scabriuscula
BiostatusPresent in region - Indigenous. Endemic
Images (click to enlarge)
Owner: J.A. Cooper | 
Caption: 69/4: Inocybe scabriuscula
Owner: Egon Horak | 
Caption: 67/257: Inocybe scabriuscula
Owner: Egon Horak | 
Caption: Inocybe scabriuscula (type): p, carpophores; q, spores; r, cheilocystidia; s, pleurocystidia; t,
caulocystidia. | 
Owner: J.A. Cooper | 
Caption: cheilo and pleurocystidia
Owner: J.A. Cooper | 
Caption: terminal cap hyphae
Owner: J.A. Cooper | 
Caption: spores
Owner: J.A. Cooper | 
Caption: caulocystidia
Owner: J.A. Cooper | 
Caption: Dried type specimen
Owner: Herb PDD |
Article: Horak, E. (1978) [1977]. Fungi Agaricini Novaezelandiae. VI. Inocybe (Fr.) Fr. and Astrosporina Schroeter. New Zealand Journal of Botany 15(4): 713–747 (http://www.rsnz.org/publish/abstracts.php).
Description: Pileus 10-40 mm diam., hemispherical when
young soon convex, conico-convex or campanulate to umbonate-expanded; yellow
brown, golden brown, at disc with red-brown to fulvous tinge (rarely black-brown);
dry, centre covered with squarrose scales and squamules, fibrillose to rimose
towards estriate margin, veil remnants absent. Lamellae adnexed to sinuate-adnate,
ventricose, crowded (L -18, 1 -3); pallid or grey in young carpophores turning
argillaceous or olive-brownish, edge concolorous or albofimbriate. Stipe 20-50
x 2.5-4 mm, cylindrical, equal; whitish yellowish to yellowish brownish, apex
sub pubescent or fibrillose, towards base with concolorous sub-squarrose to
woolly fibrils or squamules, veil remnants absent; dry, hollow, single and cespitose.
Context pale brownish. Odour and taste not distinctive. Chemical reactions on
pileus: KOH-negative.
Spores 6.5-8.5 x 4-5 µm, amygdaliform, brown,
smooth, suprahilar depression absent. Basidia 20-26 x 6-8 µm, 4-spored. Cheilo-
and pleurocystidia 35-60 x 10-17 µm, fusoid to lageniform, metuloid ("2
µm diam. near apex), hyaline, encrusted with crystals. Caulocystidia clavate
to subfusoid, thin-walled, with and without crystals. Cuticle a trichoderm of
cylindrical hyphae (5-10 µm diam.), encrusted with yellow-brown (KOH) pigment.
Clamp connections present.
Habitat: On soil among litter and moss (also Sphagnum)
under Nothofagus (N. fusca, N. cliffortioides). New Zealand.
Notes: According to my observations I. scabriuscula
is widely distributed in the beech forests of New Zealand. Its morphology varies
considerably but the following three macroscopical characters help to identify
this taxon in the field: yellow-brown to golden-brown, scaly pileus, argillaceous
lamellae (often with an olive tinge), and pale yellow-brown scales towards the
base of the stipe.
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