50 NEW YORK STATE MUSEUM ^ 



whitish, blunt at the base or prsemorsely radicating; spores subglobose or 

 broadly elliptical, .0003 to .0004 inch long, .00024 to .0003 broad. 



Pileus 3 to 4 inches broad ; stem 3 to 4 inches long, 4 to 8 lines thick. 



Much decayed wood on ground about old stumps and logs in woods or 

 their borders. June to September. Not rare in hilly, wooded districts. 



Var. repens Fr. This differs from the type chiefly in its mycelium, 

 which forms creeping branching and anastomosing string-like rootlets. In 

 Sylloge it is given as a distinct species, but it does not appear to me to be 

 worthy of such distinction. 



Without care this plant might be taken for a species of Tricholoma. 

 Stevenson says "it inclines towards the Tricholomata in the somewhat 

 membranaceous cuticle of the soft stem." Fries also notes this similarity. 

 This is the Agaricus hordus of Rep. 25, p. 73 and A. prcefoliatus of 

 Rep. 32, p. 55. The species is quite variable. The pileus is sometimes 

 irregular and even eccentric, the thin margin may be slightly striate, is 

 often split and in wet weather may be upturned or revolute. The 

 lamellae are sometimes half an inch broad or more and transversely split. 

 They may be obscurely striated transversely and even veiny above with 

 venose interspaces. Occasionally a slight anise-like odor is perceptible, 

 but in decay the plants have a very disagreeable odor and disgusting 

 appearance. Insects are fond of them and it is not uncommon to find 

 the pileus dotted with their eggs. If dried without pressure the margin 

 of the pileus becomes strongly involute. In Sylloge the dimensions of 

 the spores as quoted from different authors differ greatly. In otu: plants 

 the dimensions agree very nearly with those quoted from Britzelmayer. 



CoUybia fuliginella Pk. 



Sooty Collybia, 



(Report 40, p. 53,) 



Pileus convex or nearly plane, sometimes irregular or undulate on the 

 margin, glabrous, even, fuHginous-brown, flesh white; lamellae rather nar- 

 row, close, rounded behind, adnexed or nearly free, white; stem equal or 

 slightly tapering upward, subfibriUose, stuff"ed or hollow, colored like the 

 pileus or a little paler, with a white tomentum at the base; spores 

 subelliptical, .0003 to .00035 i^^h long, .0002 to .00025 broad, usually 

 containing a single large nucleus. 



Pileus 1.5 to 2.5 inches broad; stem 1.5 to 2 inches long, 2 to 3 lines 

 thick. 



Under or near arbor- vitas trees, Thuja occidentalis. Elizabethtown, 

 Essex county. Rare. September. 



