Mycena sp. 
Pileus 7 mm. hemispherical, minutely velvety, disc clove 
brown, shading to brown; gills thick, adnexed, subdistant broad; 
stipe white with buffy brown dots, 7 mm # 1 mm ., cartilaginous . 
Dead twigs of fallen tree top. 
Specimens examined: 
Costa Rica, Limon, above Rio Siquirres, Alt, 300 m.,Catt, Dodge, 
& Thomas 
5561 
