PRATELLI. 325 



' Gills ventricose, not decurrent. Psilocybe. 



** Gills plane, very broad behind, somewhat decurrent. Deconica Worth. 

 Smith. 

 *** Gills somewhat linear, ascending. 



II. Rigid! (rigidus, stiff). No veil. Stem rigid. Pileus scarcely with a 

 pellicle, but the "flesh most frequently scissile, hygrophanous. Gills adnexed, 

 very rarely adnate. Differing from Psaliotas and Hypholomata, to which they 

 are very similar, in having no partial veil at the first. 



I. TENACES. Veil not essential, &c. 

 * Gills ventricose^ not decurrent. 



726. A. ericaeus Pers. Pileus 2.5-4 cent, (i- 1 j in.) and more 

 broad, tawny-ferruginous when wetted, tawny-yellow when dry, 

 fleshy but thin, convex then expanded, scarcely umbonate, even, 

 smooth, commonly dry and shining, but somewhat 'viscous when 

 wetted. Stem 7.5-10 cent. (3-4 in.) long, 4 mm. (2 lin.) thick, 

 fistulose, tough, equal, somewhat smooth, but varying slightly 

 silky, becoming light yellow, white-villous at the base. Gills 

 adnate, 6-8 mm. (3-4 lin.) broad, plane, somewhat distant, pallid 

 then blackish, pruinose (becoming olive when the pruina disap- 

 pears) edge whitish. 



Gregarious, tough, various in stature. There is a smaller variety with the 

 pileus date brown. 



In woods and pastures. Rare. July-Oct. 



Xame erica, heath. Frequenting heathy ground. Pers. Syn. p. 413. 

 Fr. Monogr. i. p. 430. Hym. Eur. p. 298. Icon. t. 136. /. i. B. & Br. n. 

 149. C. Hbk. n. 416. S. Mycol. Scot. n. 390. A. clivulorum Letell. t. 676. 



727. A. udus Pers. Pileus 1-2.5 cent. (>-i in.) broad, brick- 

 tawny, becoming pale, slightly fleshy, convex then flattened, more 

 or less evidently tunbonate, smooth, even or when old slightly 

 wrinkled. Stem 5-7.5 cent. (2-3 in.) long, 2 mm. (i lin.) or a 

 little more thick, fistulosc^ equal, fibrillose, tawny -ferruginous, 

 paler at the apex. Gills adfixed, ventricose, very broad, lax, 

 plane or convex, pallid then becoming fuscous-purple. 



Not hygrophanous. Scattered, tough when young, slender. Very decep- 

 tive on account of the colour of the gills when sterile. Among Sphagna there 

 is a var. with the pileus somewhat membranaceous, acutely conical, tawny, 

 and the gills pallid because sterile. 



In swampy places among Sphagna. Epping Forest, 1880. Nov. 



Name udus, moist. Pers. Syn. p. 414. Fr. Hym. Eur. p. 298. Grevillea, 

 vol. ix. p. 93. 



728. A. areolatus Klotsch. Pileus 4-7.5 cent. (iX~3 in.) 



