164 



STUDIES OF AMERICAN FUNGI. 



position between Coprinus and Cortinarius. The species usually 

 grow on dung or in manured ground, and in this respect resemble 

 many of the species of Coprinus. Some of the species are, however, 

 not always confined to such a substratum, but grow on decaying 

 leaves, etc. 



Bolbitius variicolor Atkinson. This plant was found abundantly 

 during May and June, 1898, in a freshly manured grass plat between 

 the sidewalk and the pavement along Buffalo street, Ithaca, N. Y. 



Figure 158. Bolbitius variicolor. Cap viscid, various shades of yellow, or smoky 

 olive; gills yellowish, then rusty (natural size). 



The season was rainy, and the plants appeared each day during 

 quite a long period, sometimes large numbers of them covering a 

 small area, but they were not clustered nor cespitose. They vary 

 in height from 4-10 cm., the pileus from 2-4 cm. broad, and the stem 

 is 3-8 mm. in thickness. The colors vary from smoky to fuliginous, 

 olive and yellow, and the spores are ferruginous. 



The pileus is from ovate to conic when young, the margin not at 

 all incurved, but lies straight against the stem, somewhat unequal. 



