Summary:
Features include 1) small size, 2) a dry, matted-fibrillose cap that is dark dull vinaceous cinnamon to dingy ocher brown, 3) gills that are dark vinaceous brown to ocher brown, 4) a dull brownish stem that is matted-fibrillose at first on the lower two thirds and pruinose at the top, 5) mild odor and taste, 6) growth on wet soil, 7) a dull ferruginous spore deposit, and 8) smooth, narrowly ovate spores. Galerina fibrillosa looks more like a Phaeomarasmius than a Galerina, (Smith). The description is derived from Smith(2).

Gills:
adnate, close, broad, ventricose [broader in middle] when old; dark vinaceous brown when young and about cap-colored when old; edges minutely fimbriate [fringed] under hand lens

Stem:
1-2cm x 0.1-0.15cm, slightly widened downward, fragile; dull brownish beneath hairy-fibrillose coating like that on cap and covering the lower two thirds, top pruinose when old and lower part becoming somewhat bald

Odor:
not distinctive

Taste:
not distinctive

Microscopic spores:
spores 10-14 x 5.5-6.8 microns, narrowly ovate in face view, inequilateral in side view, smooth except for rough border round the plage, dull cinnamon in KOH; basidia 4-spored; pleurocystidia none, cheilocystidia 40-60 x 10-14 microns, "fusoid-ventricose often with wavy necks and obtuse to slightly enlarged apices"; clamp connections present

Spore deposit:
dull ferruginous

Notes:
The holotype of Galerina fibrillosa was found in Mt. Rainier National Park in WA. There are BC collections by O. Ceska at the University of British Columbia.

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