NATURAL HISTORY SURVEY s, 



Lamellae at first white, then yellow-brown, ventricose, obi 

 behind, thin, crowded. 



Pilous 2.5 to 5 cm. broad; stem 2 to 1 mm. long, while, to- 

 mcntose; spores ">.") /x. 



Decaying logs and stumps, (den Ellyn and Riverside. July 

 and August. Pilei up to !t cm. broad, <> cm. lung. Spores glo- 

 bose, somewhal exceeding the dimensions given above, 6 to 7 /<.. 



Crepidotus mollis Schaeff. 



Pileus pallid then becoming hoary, gelatinous-fleshy, soft, 

 obovate or reniform, flaccid, nearly sessile, glabrous, often im- 

 bricated. 



Lamellae decurrent to the base, close, linear, whitish tl 



watery-cinnamon. 



Spores ferruginous, elliptic, 9 x 5 to 6 /a. 



On rotten stumps, Glen Ellyn. August. Pileus white-to- 

 mentose toward the base, watery-white when moist, margin often 

 wavy. 2.5 to 6.5 cm. broad. Spores s x 5 /./.. In moi.-i weather 

 the pileus often becomes revolute with age, giving the planl I 

 appearance of a globe with lamellae projecting in all i irections. 



Crepidotus herbarum Pk. 



Pileus thin, resupinate, suborbicular, clothed with a whi 

 downy villosity, incurved on the margin when young, sometimes 

 becoming reflexed, sessile, dimidiate and less downy. 



Lamellae rather narrow, subdistant, radiating from a naked 

 lateral or eccentric point, white then subferruginous. 



Pileus 4 to 10 mm. broad: spores ellipsoid, 5 to 7."> x 3.5 to 1 \x. 



On dead grasses, twigs, etc. (den Ellyn. August. 

 Crepidotus fulvotomentosus Pk. 



Scattered or gregarious; pileus suborbicular, reniform or 

 dimidiate, sessile or attached by a short, white-villose tubercle 

 or rudimentary stem, hygrophanous, watery-brown an.! some- 

 times striatulate on the margin when moist, whitish, yellowish 

 or pale-ochraceous when dry, adorned with small, tawny hairy 

 or tomentose scales. 



Lamellae broad, subventricose, moderately close, rounded 

 behind, radiating from a lateral or eccentric white villose spot, 

 whitish, becoming brown-ferruginous. 



Pileus 1.5 to 5 cm. broad; spores ellipsoid, 7.5 to 1<> x 5 to 6 \i. 



On prostrate trunk of Acer, woods, (den Ellyn. July. The 

 lamellae of our plant are not broad, and are scarcely subvent- 

 ricose. 



Crepidotus dorsalis Pk. 



Pileus fleshy, sessile, dimidiate or somewhat reniform, flat or 

 a little depressed "behind, with a decurved slightly striate margin. 

 somewhat fibrillose-tomentose at the point of attachment, reddish- 

 vellow. 



