140 AGARICINI. 



Marasmius. place between the genuine Agarics and the Marasmii — viz., Ag. 

 (Collybia) stipitarius and Marasmius oreades. One species (not 

 British) M. subannulatus has a veil. 



The species are mostly small, thin, and commonly epiphytal ; 

 those which are found on the ground are generally on putrid 

 leaves or roots of grasses. They are too thin to be of much use 

 for food, but some are esteemed for flavouring. 



I. Collybia. Fr. Syst. Orb. Veg. i. p. 73. Pileus fleshy-pliant, at length 

 somewhat coriaceous, sulcate or wrinkled, margin at first involute. Stem 

 somewhat cartilaginous, mycelium fioccose in a very few not manifest. 



A. Scortei (scorteus, coriaceous). Stem solid, or stuffed with a pith then hol- 

 low, internally fibrous, externally with villous down (pruina, ' Monogr.') that is 

 easily wiped off covering the cartilaginous cuticle. Gills separating-free. 



* Stem woolly or strigose at the base. 



** Stem naked at the base, often composed of twisted fibres. 



B. Tergini (tergum, hide, skin, leather). Stem rooting, definitely tubular, 

 not fibrous, manifestly cartilaginous. Gills separating-free. Pileus thinner 

 than in the former section, hygrophanous, sometimes even, sometimes striate 

 at the margin. 



* Stem woolly downwards, smooth upwards. 



** Stem {at least when dry) everywhere pruinato-velvety. 



C. Calopodes (*aA.6s, beautiful; wow's, afoot). Stem curt, rootless, inserted, 

 often furnished with a fioccose tubercle at the base. Pileus convexo-involute 

 then plane and depressed ; in this state the gills, which are typically adnate, 

 are somewhat decurrent. On stipules, branches, &c. , gregarious, arid. 



* Stetn very smooth and shining upwards, with a simple base. 

 ** Stem velvety or pruinate, with a somewhat tubercular base. 



II. Mycena. Stem horny, fistulose, but here and there with a pith, 

 tough, arid, mycelium rhizomorphoid corticate and not fioccose. Pileus 

 somewhat membranaceous, campanulate then expanded, margin at the first 

 straight and adpressed to the stem. 



A. Chordales {chorda, a gut. M. chordalis). Stem rigid, rooting, or 

 adnate by a dilated base. Pileus campanulate or convex. Type manifestly 

 that of Mycetia. 



B. Rotulae (rotula, a little wheel). Stem filiform, flaccid, inserted at the 

 base. Pileus soon rather plane or umbilicate. Growing on leaves, declining 

 from the common type of Mycena. 



* Stem very smooth, shining. 

 ** Stem velvety or pilose. 



III. Apus (a, and ttov's, a foot. Stemless). Pileus sessile, resupinate. 



I. — COLLYBIA. 



A. Scortei. 



* Stem woolly or strigose at the base. 



1. M. urens Fr. — Pileus 5-7.5 cent. (2-3 in.) broad, unicolor- 

 ous, pale yellowish beco??ii?ig pale, slightly fleshy, moderately com- 

 pact at the disc, even, but here and there squamulose or rimoso- 



