110 AGARICUS. 



Collybia. Edible, but rather bitter in flavour. In Austria, where it seems to be plenti- 



ful, it is sold under the name of Nagelschwamme, nail-mushroom. Name 

 esculentus, esculent. Wulf. in Jacq. Coll. ii. t. 14. /. 4. Fr. Monogr. i. p. 

 166. Hym. Eur. p. 121. Berk. Out. p. 118. C. Hbk. n. 158. Illust. PL 

 152. S. Mycol. Scot. n. 126. Tratt. Essb. Schw. t. F. Lenz. f. 18. A. per- 

 pendicularis Bull. t. 422. /. 2. A. clavus Brig. Neap. t. 5. f. 4. Vaill. t. n. 

 /. 16-18. 



225. A. tenacellus Pers. Pileus about 12 mm. (% in.) broad, 

 fuscous then becoming pale, livid, very rarely white, slightly fleshy, 



convex then flattened, orbicular, somewhat umbonate, even, smooth ; 

 flesh white, not hygrophanous. Stem 5-7.5 cent. (2-3 in.) long, 

 but here and there lengthened to 10-12.5 cent - (4~5 i n -) scarcely 

 2 mm. (i lin.) thick, obsoletely fistulose (tube very narrow), wholly 

 equal, tense and straight, but pliable, even, smooth, becoming 

 tawny, naked and white at the apex, with a fibrillose tail-like root 

 at the base. Gills emarginato-adnexed, broad, ventricose, hence 

 they appear lax, somewhat distant, distinct, quaternate, snow- 

 white. 



Odour none ; taste not unpleasant. Solitary though sometimes in troops ; 

 very tough. 



In pine woods, among leaves or cones. Common. Autumn- 

 Spring. 



Easily distinguished by the broad, emarginato-a.dnex.ed gills. Spores 3x6 

 mk. W. G.S.; 6-8x4 mk. B. Name diminutive, tenax, tough. Toughish. 

 Pers. Syn. p. 387. Ic. pict. t. i./. 3, 4. Fr. Monogr. i. p. 165. Hym. Eur. 

 p. 121. Berk. Out. p. 118. C. Hbk. n. 157. Illust. PI. 152. S. Mycol. 

 Scot. n. 127. A. griseus Schceff. t. 236 (small.) 



* A. stolonifer Jungh. Pileus fuscous becoming pale, slightly 

 fleshy, rather plane, obtuse (somewhat depressed), smooth, margin 

 slightly striate. Stem fistulose, equal, smooth, becoming fuscous, 

 with a creeping, somewhat stoloniferous (sparingly fibrillose) root. 

 Gills rounded-adnexed, ventricose, somewhat distant, whitish. 



Very singular in the creeping root (a prolongation of the stem continuous 

 with it, not mycelium), which in neighbouring species is perpendicular ; other- 

 wise so near to A. tenacellus and A. esculentus that it seems to unite these. 



In pine woods, among leaves. Frequent. Autumn-Spring. 



Spores ellipsoid, 6-8 x 3-4 mk. K. Name stole, a sucker ; fero, to bear. 

 Stolon-bearing. From the root. Jung Linn. 1830, p. 396. Fr. Hym. Eur. 

 p. 121. Monogr. i. /. 165. B. & Br. n. 1744. S. Mycol. Scot. Supp. Scot. 

 Nat. vol. vi. p. 214. C. Illust. PL 152. B. A. tenacellus var. Fr. in Fl. Dan. 



t. 2O2I./. 2. 



** Gills narrow, crowded. 



226. A. acervatus Fr. Pileus 5-7.5 cent. (2-3 in.) broad, flesh- 



