Uaucoria semiorbicuiaris var. cos taricensis n.var 
N. semi orbicularis forma Fries, Nov, Symb. Myc. 
Pileus hemispheric, margins inrolled, 2.5 cm, reticulate, innate 
fibrillose with substriate margin, ochraceous buff, shading to cin- 
namon brown at margin, gills medium close, broad, adnate, Argus brown 
stipe 8 cm x 2-2.5 mm, minutely pruinose furfuraceous , warm buff. 
Leaf mouia in dense jungle 1660 m 
Specimens examined: 
CoBta Rica: Heredia, Cerro Central de Zurqui, 1660 m. Dodge, Valerio 
& Thomas 6132 
