158 STUDIES OF AMERICAN FUNGI. 



Hebeloma crustuliniforme Bull. This plant is usually common in 

 some of the lawns, during the autumn, at Ithaca, N. Y. It often 

 forms rings as it grows on the ground. It is from 5-7 cm. high, the 

 cap 4-8 cm. in diameter, and the stem is 4-6 mm. in thickness. 



The pileus is convex and expanded, somewhat umbonate, viscid 

 when moist, whitish or tan color, darker over the center, where it is 

 often reddish-brown. The gills are adnexed and rounded near the 

 stem, crowded, whitish, then clay color and reddish-brown, the edge 



Figure 152. Hebeloma crustuliniforme, var. minor. Cap whitish or tan color, or 

 reddish-brown at center; gills clay color (natural size). Copyright. 



whitish and irregular. The gills are said to exude watery drops 

 in wet weather. The stem is stuffed, later hollow, somewhat en- 

 larged at the base, white, and mealy at the apex. Figure 1 52 is from 

 plants (No. 271 3, C. U. herbarium) collected in lawns on the Cornell 

 University campus. The plants in this figure seem to represent 

 the variety minor. 



INOCYBE Fr. 



In the genus Inocybe there is a universal veil which is fibrillose in 

 character, and more or less closely joined with the cuticle of the 

 pileus, and the surface of the pileus is therefore marked with fibrils 

 or is more or less scaly. Sometimes the margin of the pileus pos- 

 sesses remnants of a veil which is quite prominent in a few species. 

 The gills are adnate, or sinuate, rarely decurrent, and in one species 

 they are free. It is thus seen that the species vary widely, and 

 there may be, after a careful study of the species, grounds for the 

 separation of the species into several genera. One of the most 

 remarkable species is Inocybe echinata Roth. This plant is covered 

 with a universal veil of a sooty color and powdery in nature. The 

 gills are reddish purple, and the stem is of the same color, the spores 

 on white paper of a faint purplish red color. Some place in it 

 Psalliota. Collected at Ithaca in August, 1900. 



