4 



Mycologia 



form. The spores and cystidia of the New York plant are shghtly 

 smaller than those of the European form. The pileus is very 

 viscid in wet weather. 



There is no reference, so far as I know, to the occurrence of 

 this species in America. Its habitat for a Pleurofus is so peculiar 

 that it would probably be referred to Clitocybe or some other 

 genus. The New York specimens grew among the grass, in slight 

 depressions between the clumps ; the AVashington specimens were 

 found in bare ground out in the open ; while in Europe the species 

 often occurs in the woods. 



Inocybe rimosa (Bull.) Quel. 



Cracked Inocybe 



Plate 56. Figure 7. X i 



Pileus fleshy, thin, broadly conic or campanulate to expanded, 

 obtuse or umbonate, 2.5-5 broad; surface silky-fibrous, 



radiate-rimose, yellowish-brown; lamellae adnexed, pallid to tan 

 or subferruginous ; spores ovoid to ellipsoid, smooth, dull- 

 ferruginous, 7-9 X 3-5-5 />«•; cystidia very scarce, 60-65 X 15-18 /x; 

 stipe equal, firm, solid, pruinose at the apex, subglobose below, 

 pallid, slightly bulbous at the base, 2-5 cm. long, 4-6 mm. thick. 



Very common throughout the northern hemisphere on the 

 ground in woods, and usually recognizable by its very conspicuous 

 radiate splitting. It is considered poisonous by Kobert. None of 

 the species of the genus should be eaten, because some of them 

 are poisonous and the distinctions are very difficult to make. 



Collybidium zonatum (Peck) Murrill 



Zoned Collybidium 



Plate 56. Figure 8. X i 



Pileus thin, convex or nearly plane, umbilicate, much resembling 

 a Marasmius, usually cespitose, 1-2.5 cm. broad ; surface fibrillose- 

 tomentose, tawny or ochraceous-tawny, sometimes marked with 

 slightly darker zones ; lamellae narrow, close, free, white or 

 whitish, edges whitish-pulverulent; spores broadly ellipsoid, 

 smooth, hyaline, 5-7 X Z-Al^'} stipe firm, equal, hollow, similar to 

 the pileus in color and covering, 2.5-5 cm. long, 2 mm. thick. 



Described by Peck as a Collyhia from specimens collected at 



