154 FUNGUS-FLOEA. 



B. Botulae. 



Stem very slender, flaccid, base not dilated nor flocoose, 

 but appearinf; to enter the matrix abruptly; pilens soon 

 more or less plane or nmbilioate. 



Growing on leaves, twigs, &c. 



* Stem qnite glabrous, shining. 



** Stem minutely velvety or downy. 



III. Apus. 

 Pileus sessile, resupinate. 



I. COLLTBIAEII. 

 A. Scortei. 



Marasmius urens. Fr. 



Pileus 2-3 in. across, flesh rather thick at the disc, thin 

 elsewhere, more or less camjianulate then expanded, usually 

 gibbous, rather tough, margin drooping or incurved, smooth, 

 even, pinkish-buff, paler when dry, sometimes almost umber 

 when moist, the surface usually becoming broken up when 

 dry; gills free, joined behind and becoming remote from 

 the stem, distant, tough, pale buff then brownish ; stem 

 2-3 in. long, 3 lines thick, equal, or sometimes ventricose 

 and up to ^ in. thick, pallid, covered everywhere with minute 

 white downy particles, base white, downy, solid, rigid ; 

 spores elliptical, 8 x 4 /i. 



Marasmius urens, Fries, Epicr., p. 373 ; Cke., Hdbk., 

 p. 344; Cke., lUustr., pi. 1116 (pileus brownish umlser). 



Woods and grassy places, among fallen leaves. 



Gregarious or caespitose. Taste very pungent, a feature 

 which separates the present from M. oreades. Not coarsely 

 tomentose at the base, as in M. peronatus, but only downy. 



Marasmius peronatus. Fr. 

 Very acrid. Pileus 1-2 in. across, flesh thin, pliant; 

 convex then almost plane, obtuse, opaque, becoming de- 

 pressed here and there, or lacunose, pale rufous with a 



