Summary:
{See also Hemimycena Table.} Also listed in Veined category. Features include extremely small size, white color, a translucent wrinkled cap, gills that exist as a few folds or are absent, a thread-like stem (except for a swollen base) that has fine hairs under a hand lens, growth in moss in the spray zone of a montane waterfall, allantoid to cylindric inamyloid spores, and other microscopic characters including (1)2-4-spored basidia. The description is derived from Redhead(15).

Cap:
0.12-0.18cm across, convex to flat, with prominent pointed umbo; white; wrinkled, translucent, with uneven edges

Gills:
lacking or as a few distant fold-like ridges

Stem:
0.4-0.6cm long and 0.01cm wide, thread-like except for slightly swollen base; white, finely pubescent [downy] under hand lens

Microscopic spores:
spores 9.8-10.8 x 2.5-3.1 microns, allantoid [sausage-shaped] to narrowly cylindric or narrowly pip-shaped, smooth, inamyloid, colorless, thin-walled; basidia (1)2-4-spored, 15-17 x 4.7-5.1 microns, clavate, simple septate at the base, agglutinated; pileipellis hyphae repent, 5-10 microns wide, "mostly only slightly inflated, densely diverticulate, bearing numerous cystidia especially towards the cap margin", pileocystidia tibiiform or nearly so but with a poorly developed base, sometimes with a slightly wavy neck, 30-35 microns long, head 3-4 microns wide, neck 1.7-2.0 microns wide, base 4-5 microns wide, occasionally the base partially diverticulate, cap trama hyphae parallel, 8-13 microns wide, with thin to pronounced smooth inamyloid walls, simple septate; stem hyphae parallel, 2-3 microns wide on exterior, up to 20 microns wide internally, sparsely diverticulate, and bearing numerous cystidia on surface, simple septate, inamyloid, caulocystidia similar to the pileocystidia but some larger or more irregular, up to 35 microns long, base up to 6 microns wide

Spore deposit:
[presumably white]

Notes:
Hemimycena nebulophila has been found in BC.

EDIBILITY

Synonyms and Alternate Names:
Helotium nebulophilum Redhead
Peniophora ravenelii Cooke
Phlebiopsis ravenelii (Cooke) Hjortstam Windahlia