Gymnopilus tenuis Murrill 1913

Gymnopilus tenuis Murrill, Mycologia 5: 22. 1913
Flammula tenuis Murrill, Mycologia 5: 36. 1913.
Pileus rather thin, convex to expanded, obtuse, cespitose, 6-10 cm. broad; surface paleyellow to ferruginous, dry, fibrillose to floccose-scaly, at length subglabrous, margin thin, not striate, often uneven and undulate; lamellae decurrent, crowded, narrow, yellow to ferruginous ; spores ellipsoid, ferruginous, minutely punctate, 7 X 4 /x ; stipe cylindric, slightly fibrillose, ferruginous-brown, often whitish at the base, hollow, the rind becoming hard and horny on drying, 4-6 cm. long, 5-8 mm. thick; veil of bright-yellow fibers, soon vanishing.
Type locality: Port Antonio, Jamaica.
Habitat: On dead wood.
Distribution: Jamaica, Cuba, and the Bahamas.

Gymnopilus tenuis is a species of mushroom in the family Hymenogastraceae.