Il8 AGARICUS. 



Collybia. slightly tough, companulato-convex then expanded, obtuse or um- 

 bilicate, without striae, slightly wrinkled or very thinly squamu- 

 lose, the margin, which is at first involute, always even. Stem 

 5-7.5 cent. (2-3 in.) long, 4 mm. (2 lin.) thick, hollow, equal, tense 

 and straight, not rooted and pubescent only at the base, at first 

 sight smooth, but somewhat fibrillose when examined under a lens, 

 becoming cinereous, white and when young as if flocculose at the 

 apex. Gills attenuato-adnexcd, very broad, almost obovate, rather 

 thick, distant, distinct, white at length becoming cinereous. 



Inodorous. Its affinity is perhaps nearest to A. atratus. 

 In wood. Marlborough Forest, 1863. Oct. 



Name mus, a mouse. Mouse-coloured. Batsch f. 19 (if white-spored). 

 Fr. Monogr. i. p. 172. Hym. Eur. p. 128. B. & Br. n. 1210. 



244. A. protractus Fr. Pileus scarcely 2.5 cent, (i in.) broad, 

 grey-fuscous, shining, somewhat membranaceous, convexo-plane, 

 the slightly fleshy depressed disc often with the rudiment of a 

 central umbo, the paler margin manifestly striate. Stem 7.5 cent. 

 (3 in.) long above ground, 2 mm. (i lin.) thick, delicately fistulose, 

 remarkably cartilaginous, but at length soft, tense and straight, 

 even, wholly smooth, livid-grey, under ground extended in the 



form of a root which is attenuated downwards and fibroso-strigose. 

 Gills adfixed, but very ventricose, as if truncate behind, very broad 

 (6 mm., 3 lin., and more), somewhat distant, grey, delicately white- 

 pruinose. 



Scarcely strong-smelling; very different from A. inolens. 



On mossy ground beside stumps, &c. Rare. Aug.-Nov. 



Name protraho, to draw out. From the prolongation of the stem in a 

 root-like form. Fr. Monogr. i. p. 173. Hym. Eiir. p. 128. Icon. t. 67. f. 2. 

 B. & Br. n. mo. C. Hbk. n. 164. Illust. PL 270. S. Mycol. Scot. n. 136. 



245. A. tesquorum Fr. Pileus 6-10 mm. (3-5 lin.) broad, 

 fuscous-black, becoming pale, fleshy- membranaceous, slightly 

 firm, convex, very obtuse, even, smooth ; flesh of the same colour. 

 Stem 4 cent. (i]/2 in.) long, not reaching 2 mm. (i lin.) broad, 

 fistulose, somewhat filiform, equal, flexuous, smooth, fuscous, 

 mealy at the apex. Gills free, very ventricose, 4 mm. (2 lin.) 

 broad, somewhat distant, cinereous-fuscous. 



Scattered. Odour none. Formerly .overlooked on account of its very small 

 stature and dirty colours, but very distinct. Easily distinguished from species 

 nearest to it by its free broad gills. 



In waste ground and open pastures. Ascot. 



