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Mycena vulgaris

© A. Aronsen
Vestfold, Nøtterøy, Torød 5 Oct. 2003


Pileus up to 8.5 mm across, parabolical to convex,translucent-striate, glabrous, viscid, covered with a gelatinous, elastic, separable pellicle, at first blackish grey to dark grey with white margin, (or in some small specimens, entirely whitish), becoming slate grey with whitish margin. Flesh thin, whitish. Odour hardly distinctive, reminiscent of M. vulgaris. Lamellae 14 – 15 reaching the stipe, arcuate, broadly adnate, decurrent with a tooth, fairly thick, white, the edge concolorous, concave, separable as an elastic-tough thread. Stipe up to 40 x 1 mm, hollow, tenacious, terete, equal, straight to flexuous, glabrous, viscid, covered with a separable, gelatinous pellicle, at first black at the apex and dark grey farther below, finally grey to grey-brown, mostly with the apex blackish grey, the base covered with long, coarse, flexuous, white fibrils.

Basidia 23-30 x 5.5-7 µm, with sterigmata up to 4.5 µm long, 4-spored, clamped. Spores 7.4-8.2(-9) x 3.5- 4.5 µm, (narrowly) pip-shaped, smooth, amyloid Cheilocystidia forming a sterile band, clamped, embedded in gelatinous matter, cylindrical, terminated with much branched gelatinizing excrescences. Pleurocystidia absent. Hyphae of the pileipellis embedded in gelatinous matter, smooth, with much branched and diverticulate sidebranches.

On the central nerves of fallen, decayed leaves of Populus tremula and among litter under Pinus.

S-Norway: Vestfold, Nøtterøy, Torød, 5 Oct. 2003. A. Aronsen A 46/03.

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A striking character of this taxon is the blackish to dark grey pileus and the black apex of the stipe. I have never seen these colours in Mycena vulgaris. Otherwise there is not much separating it from M. vulgaris. The microscopy is identical with M. vulgaris.


 

© Arne Aronsen 2002-2015