MUSHROOMS AND OTHER COMMON FUNGI. 17 



Tricholoma nudum. (Edible.) 



Entire plant at first violaceous, becoming paler and sometimes reddish; cap con- 

 vex, then expanded and sometimes depressed, moist, smooth, margin incurved, thin, 

 naked, flesh colored, comparatively thin, but firm and solid; gills crowded, rounded 

 behind, and somewhat decurrent if cap is depressed, violet, but later may be reddish; 

 stem equal, stuffed, violaceous, becoming pale. 



Cap 2 to 3 inches broad; stem 2 to 3 inches long, one-half inch thick. 



Edible, very good; according to all authorities, the more delicate flavor of young 

 plants makes them preferable to those in which the color changes have taken place; 

 on rich ground among leaves. 



Tricholoma personatum. (Edible.) 



Cap convex, expanded, slightly depressed, fleshy, moist, pale tan, tinged gray or 

 violet, young plants may be entirely violet, margin downy, involute; flesh whitish; 

 gills crowded, rather broad, rounded behind, nearly free, violaceous, changing to (kill 

 reddish brown; stem stout, subbulbous, fibrillose, solid, colored like cap or lighter. 



Cap 2 to 5 inches broad; stem 1| to 2\ inches long, one-half to three-fourths inch 

 thick. (PI. XIV, fig. 1.) 



Tricholoma personatum is to be found quite commonly in the late summer and fall 

 months on the ground in the woods and open places. One of the most acceptable 

 edible species. 



Tricholoma personatum and T. nudum are often confusing to the amateur, but may 

 be separated from each other by the fact that in T. nudum the margin of the cap is 

 naked and thinner than in T. personatum. 



Tricholoma russula. (Edible.) 



Cap convex, later plane, and sometimes depressed in center, granular, viscid in 

 damp weather, red or flesh colored, becoming lighter at the margin, which is involute 

 and in young plants downy; flesh, white or tinged with red under the cuticle, taste 

 mild; gills rounded or somewhat decurrent, rather distant, white, later becoming 

 red spotted; stem solid, white, stained with red dots, or squamules. 



Cap 3 to 5 inches broad; stem 1 to 3 inches long, one-half to three-fourths inch thick. 



This species is to be found in mixed woods and hilly slopes from August until after 

 frost. It may occur solitary, but often is found in patches. Edible and reported of 

 fine flavor. 



There is frequently a sharp line of demarcation which appears like a well-defined 

 ridge between the gills and the substance of the stem. 



Tricholoma terreum. (Edible.) 



Cap fleshy, convex, or nearly plane, sometimes umbonate, innately fibrillose, floc- 

 cose or scaly, grayish brown or mouse colored; flesh white or light gray; gills sub- 

 distant, adnexed, white or ash colored; stem solid or hollow. 



Cap 1 to 3 inches broad; stem 1 to 2 inches long. (PL XIV, fig. 2.) 



This species grows on the ground in mixed or coniferous woods. It is found abun- 

 dantly from September to November and much later in Virginia, Maryland, and the 

 District of Columbia. 



Tricholoma terreum frequently occurs in association with T. equestre, appearing in 

 abundance when the season has been too dry for a good run of T. equestre. 



COLLYBIA. 



In the genus Collybia the volva and veil are both wanting, and the 

 cap is fleshy, usually thin with incurved margin. The gills are free, 

 notched or sinuate, membranaceous, and soft; the stem is cartilagi- 



73431°— Bull. 175—15 2 



