Pluteus oervinus group 
Pileus expanded, somewhat viscid, fibrillose, umbonate, mar- 
gin striate, argus brown, pellicle separable; flesh thin, very 
fragile; 8 cm diam; gills freepinkish, close, ventricose , fragile 
stix>e fleshy fibrous, surface reticulate fibrillose, 7 cm long, 
7 mm above 8 mm below with a slight bulb. 
Specimens examined 
Costa Rica: San .Tose, Rancho Redondo, 2300 m, Dodge & Thomas 5065 
