Collybia 
Mjacena 
Pileus 2.5 cm., convex, very slightly umbonate, slightly vel- 
vety, wood-brown to bufy-brown, slightly darker on the umbo;gills 
adnexed, thick.white , subdistant; stipe white, slender, cartilaginous, 
compressed 2.5 cm £ 2 mm. 
Dead wood. 
Specimens examined: 
Costa Rica, Limon, above Rio Siquirres, Alt. 300m., Catt, Dodge & 
Thomas 
5532 
