138 AGARICUS. 



Mycena. In woods. Uncommon. Sept.-Oct. 



Name vitrum, glass. From the glassy appearance. Fr. Monogr. \. p. 218. 

 Hym. Eur. p. 143. Icon. t. 82. /. i. B. 6 Br. n. nil. C. Hbk. n. 188. 

 II lu st. PI. 1 60. S. My co I. Scot. n. 166. 



289. A. tenuis Bolt. Pileus 12 mm. (X in.) or a little more 

 broad, hyaline or becoming fuscous-white, very thinly membran- 

 aceous, campanulato-convex, obtuse, lineato-striate, smooth, watery, 

 the sliglit margin beautifully fringed in a crenate manner, as if 

 appendiculate with the fragments of a veil. Stem tall, 7.5 cent. 

 (3 in.) and more long, scarcely 2 mm. (i lin.) thick, very tense and 

 straight, even, smooth, watery, hyaline-white, or here and there 

 becoming yellow at the base. Gills adnate, with a small decur- 

 rent tooth which is often obsolete, distant, distinct, linear, rather 

 thick comparatively, soft, whitish. 



Wholly watery, very delicate, very fragile, wholly wavering. It differs from 

 all other species in the tube of the stem which is very thin, membranaceous, 

 consisting as it were only of the cuticle of the foregoing species, hence pellucid. 

 It varies with the pileus conical, lineato-striate to the prominent umbo, when 

 dry even and becoming pale. 



In shady moist woods. Rare. Sept. 



Spores 3x4 mk. W.G.S. Name tenuis, thin. Delicate. Bolt. t. 37. Fr. 

 Monogr. i. p. 218. Hym. Eur. p. 143. Berk. Out. p. 125. C. Hbk. n. 189. 

 . Illust. PI. 160. S. Mycol. Scot. n. 167. 



V. FILIPEDES. Stem filiform, 



290. A. filopes Bull. Pileus about 12 mm. (}4 in.) broad, livid- 

 fuscous, rarely whitish, remarkably membranaceous, conical then 

 campanulate, obtuse, striate, dry, smooth. Stem 7.5 cent. (3 in.) 

 and more long, fistulose, equal, \N\\Q\\^ filiform, tense and straight, 



flaccid, but not very tough, even, smooth, rooting with a long pilose 

 tail, when in vigour filled with a watery juice. Gills free or only 

 reaching the stem, ventricose or lanceolate, crowded, white. 



The gills are at length grey at the base as is usual in this group. More 

 fragile than the rest. Elegant in appearance where it grows in troops. 



In woods, among leaves, &c. Frequent. Aug.-Nov. 



Na.meJZtum, a thread ; pes, a foot. With thread-like stem. Bull. t. 320. 

 Fr. Monogr. i. p. 219. Hym. Eur. p. 144. Berk. Out. p. 126. C. Hbk. n. 

 191. Illust. PL 161. S. Mycol. Scot. n. 168. Hoffm. Norn. t. 6.f. i. A. 

 pilosus Batschf. 2. 



291. A. amictus Fr. Pileus 6-12 mm. (3-6 lin.) broad, vary- 

 ing in colour, green, bluish-grey, livid, but not pure, membran- 



