66 NEW YORK STATE MUSEUM 



€ven or slightly striate, hollow, slightly pruinose at the top, white or 

 whitish; spores .00025 ^° .0003 inch long, .00016 broad. 



Pileus 6 to 12 lines broad stem 1.5 to 2 inches long, about i line thick. 



Damp ground in wooded swamp. Montgomery county. June. 



This species bears some resemblance to C. dryopJiila, from which it is 



separated by its hygrophanous pileus, serrated lamellae and white stem. 



It is rare. 



CoUybia alcalinolens Pk. 



Alcaline Collybia. 



(Bulletin No 2, p 6.) 



Pileus thin, subconical convex or nearly plane, glabrous or slightly 

 silky-fibrillose, hygrophanous, dark-brown and sometimes striatulate on 

 the margin when moist, grayish-brown or cinereous when dry, shining, 

 flesh white, odor strong, alcaline; lamellae broad, subdistant, deeply 

 emarginate or adnexed, with a slight decurrent tooth, somewhat ventri- 

 cose, whitish : stem shining, glabrous, slightly pruinose at the top, hollow, 

 whitish; spores broadly elliptical; .0003 to .00035 ^^*^^^ long, .0002 to 

 .00025 broad. 



Plant gregarious; pileus 8 to 18 lines broad; stem i to 2 inches long, 

 I to 3 Hnes thick. 



Thin woods and bushy places. Rensselaer county. June. 



The peculiar odor of this species resembles that of chloride of lime. 

 The plant is very variable. 



The disk of the pileus may be prominent, depressed or somewhat um- 

 bilicate. It is somtimes more highly colored than the rest and when dry 

 it often appears canescent with short grayish fibrils. The stem is some- 

 times compressed or irregular. 



Collybia expallens Pk. 



Pallid Coli.ybia. 

 (Rep. 44, p. 18.) 



Pileus thin, broadly convex or nearly plane, sometimes centrally de- 

 pressed, glabrous, hygrophanous, brownish and striatulate on the thin 

 margin when moist, whitish when dry, flesh whitish when dry, odor dis- 

 tinct, farinaceous; lamellae rather broad, subdistant, rounded behind, 

 adnexed, whitish subcinereous or dingy-yellowish; stem short, hollow, 

 equal or slightly thickened at the base; spores broadly elliptical, .0002 

 inch long, .00016 broad. 



