Agaricus Pileus convex, expanded, 4.5cm.; disc buckthorn brown shading to cartridge buff over most of pileus, cracking, smooth, shining, subviscid Gills sinuate, adnate, edges wavy white, brownish olive, broad, close Stipe 6mm. above, 9mm. below, 7-8cm. long, silky, staining French green to light Danube green; annulus thin, persistent, 1.5cm. from top; no bulb or volva Spore print blue violet black or dull violet black Potrero on C. Carpintera s.e. Tres Ríos Costa Rica, Cartago prov., Cerro Carpintera Dodge & Goerger 7-1-36