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 Marasmiellus omphaloides
BiostatusPresent in region - Indigenous. Endemic
Images (click to enlarge) | 
Caption: Type specimen, Kew
Owner: B.P. Segedin | 
Owner: J.A. Cooper | 
Caption: top caulocystidia. Bottom cap surface.
Owner: J.A. Cooper | 
Caption: spores and cystidia
Owner: J.A. Cooper |
Article: Stevenson, G. (1964). The Agaricales of New Zealand: V. Kew Bulletin 19(1): 1-59.
Description: Pileus 11-17 mm diam., dull white, thin, dry, hemispherical at first becoming plano-concave, somewhat fluted at margin. Gills adnate-decurrent, creamy white, distant, occasionally forked and with folds between. Stipe 2 cm x 1 mm, tapering downwards, cream immediately under the gills, fawn to purple brown below, solid, tough. Spores 11-12 x 4-5.5 µm, non-amyloid, thin-walled. Hymenophoral trama non-amyloid. Cuticle of woven repent non-amyloid hyphae with clamp connections, with sparse superficial dermatocystidia which are hair-like, amyloid and thick-walled. (Fig.14).
Habitat: On fallen wood, Waikaneae, 1.1.1951, Stevenson (type).
Article: Horak, E. (1971). A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462 (http://www.rsnz.org/publish/abstracts.php).
Notes: This species belongs to a group of apparently related Marasmiellus-like fungi
known from New Zealand which possess subamygdaliform, smooth spores and
long, thick-walled, yellow-brown, hair-like dermatocystidia in the cuticle. To our
knowledge there is no existing genus where these fungi could be adequately
accommodated.
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