136 AGARICUS. 



Mycena. It varies flesh-colour, livid, &c. Odour weak, alkaline, often obsolete ; 



otherwise it is widely removed from A. alkalinus, &c., in the substance of the 

 whole plant being soft becoming flaccid rather than rigid-fragile, and in the 

 pilezis being hygrophanous and easily changing colour. Gregarious but never 

 caespitose. There is also a form with the pileus conical then campanulate, 

 velvety under a lens. 



In mixed wood among moss. Glamis, 1874, c. Oct.-Nov. 



Spores 8-10 x 4-6 mk. B. Name metatus, furnished with a meta. Conical. 

 Fr, Monogr. i. p. 215. Hym. Eur. p. 142. B. &* Br. n. 1519. S. Mycol. 

 Scot. n. 162. C. Illust. PL 238. b. Paul. t. 99. /. 8 (livid flesh-colour). 

 Buxb. C. iv. t. 15. f. 3. 



284. A. plicosus Fr. Pileus 2.5 cent, (i in.) broad, fuscous- 

 cinereous, opaque when dry, membranaceous, fragile, campanu- 

 late then expanded, with a slightly fleshy, broad, obtuse, even 

 umbo, otherwise deeply lineato-sulcate, almost plicose with the 

 distant furrows, often split. Stem 2.5 cent, (i in.) long, slightly 

 firm, fragile however, tense and straight, equal, even, smooth, 

 grey, becoming fuscous, blunt, not rooted, white-villous at the 

 base. Gills adnate and without a decurrent tooth, thick, truly 

 distant, connected by veins, grey and at length whitish-pruinose. 



The stem is by no means soft like that of A. metatus. 



On the ground in wood. Rare. Killin, 1876. Sept. 



Name plico, to fold. From the folds on the pileus. Fr. Monogr. i. p. 216. 

 Hym. Eur. p. 142. Icon. t. 81. f. 4. B. & Br. n. 1641. S. Mycol. Scot. n. 

 163. C. Illust. PI. 285. b. 



285. A. peltatus Fr. Pileus 18 mm. (^ in.) broad, black- 

 fuscous when damp, grey when dry, convex when young, soon 

 exactly plane, the turned up margin very closely but manifestly 

 striate, disc slightly fleshy, orbicular, even, plane. Stem 4-5 cent. 

 (i/4-2 in.) long, scarcely 2 mm. (i lin.) thick, equal, rigid, some- 

 what fragile, often flexuous, even, smooth, naked, livid. Gills 

 adnate with a small decurrent tooth, at first crowded, ventricose, 

 but somewhat distant when the pileus is flattened, distinct, grey, 

 paler towards the edge. 



The slightly fleshy centre is dilated and plane beyond the middle (rather 

 umbilicate than umbonate above the tube of the stem). When dry the margin 

 is raised all round and becomes black, presenting the form of a shallow circular 

 vessel. Among mosses the stem is drawn out and villous at the base, but not 

 truly rooted. A most distinguished species, inodorous, growing in troops and 

 densely crowded. 



In woods among moss. Rare. Altyre. Aug.-Sept. 



Name -pelta, a small shield. From its shape. Fr. Monogr. i. /. 216. 

 Hym. Eur. p. 142. S. Mycol. Scot. n. 164. 



