Gymnopilus brittoniae (Murrill) Singer 1975

Pholiota brittoniae Murrill, Mycologia 5: 35. 1913
Pileus reaching 10 cm. broad, large and fleshy, cespitose, convex to expanded^ becoming depressed at the center, fulvous, becoming fuliginous or blackish with age, dry, imbricatefibrillose to subglabrous, entire, concolorous, and strongly inflexed on the margin on drying; lamellae sinuate with a decurrent tooth reaching as far as the annulus, seceding with age, broad, irregular in shape, subdistant, ferruginous, darker with age; veil forming an ample, membranous, ferruginous, persistent annulus fixed near the apex of the stipe; stipe enlarged below, concolorous, blackening with age, longitudinally furrowed, hollow, reaching 10 cm. long and 1-3 cm. thick; spores broadly ellipsoid to subglobose, roughened with an irregular sculpturing, ferruginous, 8-10 m; cystidia none.
Type locality: Cinchona, Jamaica. Habitat: At the base of living or dead trees. Distribution: Known only from the type locality.

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

Gymnopilus brittoniae là một loài nấm thuộc họ Cortinariaceae.