Fleurotus Pileus dimidiate, up to 7cm., flat; margins somewhat wavy and crisped; surface smooth, color 17"b cinnamon buff shading to pale pinkish buff at margin; margin not thin nor inrolled Gills narrow, cinnamon buff to pinkish buff, reaching the substrate without stipelike point of attachment; flesh of pileus adnate to bark of host On decaying Erythrina sp. on roadside above Tres Ríos Costa Rica, Cartago Prov., slopes of Cerro Carpintera, 1400m. 7-1-36 Dodge & Goerger