92 STUDIES OF AMERICAN FUNGI. 



white. The gills are white, crowded, narrow at each end. The 

 spores are smooth, globose, 5-7 ^ in diameter. The stems are tough, 

 fibrous, solid, tinged with the same color as cap. Fig. 93 is from 

 plants (No. 5467, C. U. herbarium) collected at Ithaca, October 

 14, 1900. 



COLLYBIA Fr. 



In the genus Collrbiathe annulus and volva are both wanting, the 

 spores are white, the gills are free or notched, or sinuate. The stem 

 is either entirely cartilaginous or has a cartilaginous rind, while the 

 central portion of the stem is fibrous, or fleshy, stuffed or fistulose. 

 The pileus is fleshy and when the plants are young the margin of 

 the pileus is incurved or inrolled, i. e., it does not lie straight against 

 the stem as in Mycena. 



Many of the species of Collybia are quite firm and will revive 

 somewhat after drying when moistened, but they are not coriaceous 

 as in Marasmius, nor do they revive so thoroughly. It is difficult, 

 however, to draw the line between the two genera. Twenty-five 

 of the New York species of Collybia are described by Peck in the 

 49th Report N. Y. State Mus., p. 32 et seq. Morgan describes 

 twelv.e species in Jour. Cinn. Soc. Nat. Hist., 6: 70-73. 



Collybia radicata Rehl. Edible. This is one of the common and 

 widely distributed species of the genus. It occurs on the ground in 

 the woods or groves or borders of woods. It is quite easily recog- 

 nized by the more or less flattened cap, the long striate stem some- 

 what enlarged below and then tapering off into a long, slender 

 root-like process in the ground. It is from this " rooting " character 

 that the plant gets its specific name. It is 10-20 cm. high, the cap 

 3-7 cm. broad, and the stem 4-8 mm. in thickness. 



The pileus is fleshy, thin, convex to nearly plane, or even with 

 the margin upturned in old plants, and the center sometimes 

 umbonate. It is smooth, viscid when moist, and often with wrinkles 

 on the surface which extend radially. The color varies from nearly 

 white in some small specimens to grayish, grayish brown or umber. 

 Thev flesh is white. The gills are white, broad, rather distant, 

 adnexed, i. e., joined to the stem by the upper angle. The spores 

 are elliptical and about 15x10 /'. The stem is the same color as the 

 pileus though paler, and usually white above, tapers gradually above, 

 is often striate or grooved, or sometimes only mealy. The long 

 tapering " root " is often attached to some underground dead root. 

 Fig. 94 is from plants (No. 5641, C. U. herbarium) collected at 

 Ithaca, August, 1900. 



Collybia velutipes Curt. Edible. This is very common in woods or 



