Heliomyces angustifolius Murrill 1915

Heliomyces angustifolius Murrill, sp. nov
Pileus convex to subexpanded, slightly depressed on the disk, subtranslucent except at the center, solitary, 3 cm. broad; surface smooth, glabrous, multistriate over the lamellae, pallid with darker center, becoming bay or chestnut on drying, margin entire, white to pallid, not inflexed on drying: lamellae adnate, narrow, crowded, twice inserted, not interveined, white to discolored: stipe cylindric, enlarged at the apex and base, grayish-pruinose, not glabrescent, compressed and rigid when dry, 4 cm. long, 1.5-2.5 mm. thick.
Type collected on dead wood in British Honduras, 1906, Morton E. Peck (herb. N. Y. Bot. Gard.). Distribution: Known only from the type locality.