118 FUNGUS-FLORA. 



Mycena pelianthina. Bolton. 



Pileus about 1 in. across, flesh rather thick at the disc, 

 thin elsewhere; convex then expanded, obtuse, nioist, hygro- 

 phanous, margin striate, pale livid-purple, becoming pale 

 when dry ; gills adnexed, broad, distinctly connected by 

 veins, purplish, with a darker, fimbriated edge ; stem 2-3 in., 

 long 1^ line thick, equal, firm, fibrillosely-striate above,, 

 pallid, base more or less downy, hollow; spores elliptical, 

 7 X 4 p.. 



Agaricus (Mycena) peliantJiinus, Fries, Syst. Myc., p. 112; 

 Cke., Hdbk., p. 75 ; Cke., Illustr., pi. 156, f. 1. 



Agaricus denticulatus, Bolton, t. 4, f. 1. 



Among dead leaves in woods. 



Sometimes gregarious. Known by the purplish pileus and 

 gills. 



Pileus 1-2 in. broad, when dry whitish, tinged with 

 purple; stem 2-3 in. high, l|-2 lines thick; the gills are 

 sprinkled over with short purple hairs, arranged in fascicles 

 on the edge ; smell strong, (Berk.) 



,COLLYBIA. Fries. 



Pileus symmetrical, flesh usually thin, margin incurved 

 at first, not coarsely striate nor corrugated ; gills free or 

 adnexed and rounded behind, membranaceous, soft ; stem 

 with a cartilaginous cortex, internally cartilaginous or soft,, 

 fistulose, often rooting ; spores white, smooth. 



Collybia, Fries, Epicr., p. 81; Cke., Hdbk., p. 62 (as a 

 subgeuus of Agaricus). 



Growing on wood, leaves, and on decaying fungi, also on 

 the ground, and then often rooting. 



Most closely allied to Marasmius, which, however, differs in 

 the dry, somewhat coriaceous, tough substance of the whole- 

 fungus, somewhat persistent, *nd fully expanding when 

 moistened after being dried. Clitocybe and Tricltoloma differ 

 in the stem being fibrous externally, and Mycena in having- 

 the margin of the pileus straight, and not incurved wheii 

 young. 



