COLLYBIA. 151 



Agaricus (Collybia) clusilis, Fries, Epicr., p. 98; Cke., 

 Hdbk., p. 74; Cke., Illustr., pi. 247a. 



In woods. 



Allied to C. tylicolor but differs in the umbilicate pileus 

 and decurrent tooth to the gills. The same features sepa- 

 rate this species from C. nummularia. 



Collybia tylicolor. Fr. 



Pileus J in. across, flesh thin, convex then expanded, 

 somewhat unibonate, even, unpolished, opaque, bluish-grey, 

 everywhere powdered with white meal when young; gills 

 free, distant, broad, plane, rather thick, grey but paler than 

 the pileus ; stein about 1 in. long and 1 line thick, equal, 

 even, grey, everywhere powdered with white meal, hollow. 



Agaricus (Collybia') tylicolor, Fries, Epicr., p. 98; Cke., 

 Hdbk., p. 74; Cke., Illustr., pi. 247A. 



In woods. 



Inodorous. Known by being entirely grey, and in having 

 the pileus and stem powdered with white, at least when 

 young. 



Introduced species. 



Collybia caldarii. Berk. 



Pilens in. across, hemispherical, umbonate, brown, 

 rugose, not turning pale; stem paler, even, cartilaginous 

 externally, 2 in. high, not a line thick ; gills adnato-decur- 

 rent, somewhat ash-coloured, interstices near the margin 

 veined. 



Agaricus (Collybia^) caldarii, Berk., Grevillea, i. p. 89 ; 

 Cke., Hdbk., p. 75. 



On Sphagnum in an orchid pot at Dangstein. 



Collybia Dorotheas. Berk. 



Pileus 1 in. and more across, at first globose, dark brown, 

 then flatly hemispherical, at length expanded, with a slight 

 limbo, and eventually depressed, pale brown, radiately 

 sulcate from the crenate margin almost to the centre, granu- 

 lated, beset with short white bristles, which in the young 

 state point in every direction; stem 2-2i in. high, scarcely 

 a line thick, at first brownish above, white below, with a 

 minute disc like swelling at the base, then yellowish or 

 rufous below and whito above, granulated like the pileus, 



