9: 



STUDIES OF AMERICAN FUNGI. 



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

 the stem as in Mvccna. 



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

 somewhat after drying when moistened, but they are not coriaceous 

 as in Manisiiiiifs, 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 

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



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



wid ely 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 thick- 

 ness. 

 The pileus IS tleshy, 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. 

 The 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 15X io/<. 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. 



FiGURK 93. — Collylria radicata. Cap grayish 

 brown to grayish and white in some smalfforms. 



