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 Agrocybe olivacea
BiostatusPresent in region - Indigenous. Endemic
Images (click to enlarge)
Caption: holotype; A. Caulocystidia; B. Pleurocystidia; C. Cheilocystidia; D. Basidiospores; E. Basidia; | 
Caption: spores and vesiculose cheilocystidia.
Owner: J.A. Cooper | 
Owner: J.A. Cooper | 
Caption: ZT69-088
Owner: E. Horak: © Creative Commons Attribution-Noncommercial 3.0 New Zealand | |
Article: Watling, R.; Taylor, G.M. (1987). Observations on the Bolbitiaceae: 27. Preliminary account of the Bolbitiaceae of New Zealand. Bibliotheca Mycologica 117: 61 p. + 17 pl.
Description: Pileus <52 mm, convex at first, becoming umbonate-expanded, honey-brown to ochre brown at disc, pale grey-brown outwards, centre distinctly wrinkled to grooved, less so towards margin, hygrophanous, glutinous; margin inconspicuously striate. Gills adnexed to almost free, very dense, grey with distinct lilac tinge, with concolorous, subserrate to fimbriate edge. Stipe 150 x 6 mm (13 mm at base) cylindrical or attenuated towards apex, base also subbulbous, with conspicuous white rhizoids, whitish to pale yellowish, dry, hollow, minutely pruinose at apex, below with numerous appressed concolorous to pale yellow-brown belts of veil; cortina none. Chemistry KOH, HC1, NH3 on pileus-negative.
Basidiospores brown in mass, 11-12.5 x 7-8 µm, elliptic in face-view, slightly flattened in side-view, thick-walled, and smooth; germ-pore relatively large. Basidia 4-spored, 34-40 x 10-11 µm clavate. Cheilocystidia vesiculose often in chains separated by clamp-connections, end-cells 20-30 x 15-18 µm; pleurocystidia clavate with swollen apex.
Notes: This is a member of Agrocybe sg. Agrocybe sect. Agrocybe in virtue of the prominent pleurocystidia and velar remains. It undoubtedly is related to A. earlei (Murr.) Watl. from which it differs in slightly broader spores, more vesiculose pleurocystidia and olive pileus-colour.
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