Naucoria Pileus up to 2cm., expanded, very broad, slight umbo, hygrophanous; disc citron yellow; margin serpentine green in younger specimens becoming antimony yellow with trace of buckthorn brown in center, margin Saccardo's [illegible] olive; flesh thin Gills adnate, broad subdistant, Saccardo's olive Stipe 2.5cm. x 1-2mm., lemon yellow above to light cadmium below, cartilaginous, smooth or very minutely fibrillose On decaying chips & twigs in forest along quebrada Costa Rica, San José prov., Guayabillos Dodge & Goerger 7-7-36