PRATELLI. 335 



Spores brown-purple. Pileus clothed, when young, with a delicate evanes- Psathyra. 

 cent veil. 



Among sticks. Rare. Aug.-Sept. 



Name bis, a.nd/rons, front. With two faces. From the different colours. 

 Berk. Eng. Fl. v. p. 114. Out. p. 173. C. Hbk. n. 425. Illust. PL 594. S. 

 Mycol. Scot. 11. 408. Fr. Monogr. ii. p. 347. Hym. Eur. p. 307. Icon. t. 

 138. /. 2. Var. semitinctus Phill. C. Illust. PL 594. 



751. A. semivestitus B. & Br. Pileus about 12 mm. (X in-) 

 broad, dark brown becoming pale, ovate, obtuse, sprinkled with 

 little snow-white fibrils more than half-way up, not striate. Stem 

 5 cent. (2 in.) long, 3 mm. (i% lin.) thick, fistulose, nearly straight, 

 fibrilloso-silky, snow-white. Gills adnate, ascending, broad be- 

 hind, umber-brown, tinged with the dark spores. 



The stem is rather strong, white with a pale under-tinge of brown, and the 

 walls within are white with down. Allied to A. noli-tangere, but distinct in 

 character from all the neighbouring species. 



Among grass in rich pasture. King's Cliffe, 1860. Oct. 



Spores elongate pruniform, 14 mk. Q. Name semi; vestio, to clothe. 

 Half-clothed. From the fibrils on the pileus. B. & Br. n. 920. t. 14. /. 5. 

 C. Hbk. n. 432. Fr. Hym. Eur. p. 307. 



752. A. fibrillosus Pers. Pileus 2.5 cent, (i in.) and more 

 broad, livid or becoming white, somewhat membranaceous, cam- 

 panulate then convex, then flattened, obtuse, striate with the 

 translucent gills, commonly smooth, sometimes at the first squam- 

 ulose. Stem 7.5-10 cent. (3-4 in.) long, 4-6 mm. (2-3 lin.) thick, 

 fistulose, equal, clothed throughout with fibrilloso-fascictilate, 

 spreading, white sguamules, white. Gills adnate, broader behind, 

 6-10 mm. (3-5 lin.) broad, at length plane, cinereous then becom- 

 ing black-purple. 



Spores black-purple. Assuming many forms ; always solitary. The typical 

 form is very fragile. 



On the ground in woods. Rare. 



?nz, a fibre. Covered with fibrils. Pers. p. 424 (fibrils becoming 

 black, perhaps from the spores). Fr. Monogr. \. p. 442. Hym. Eur. p. 308. 

 Berk. Out. p. 173. C. Hbk. n. 428. C. Illust. PL 595. B. 



753. A. Gordoni B. & Br. Pileus 4 cent. (\y z in.) broad, at 

 first pale cinereous, then white, membranaceous, campanulate, 

 sulcato-striate, sprinkled with white floccose scales. Stem 5 

 cent. (2 in.) long, 3 mm. (\y z lin.) thick, fistulose, brittle, trans- 

 versely undulated, white-pruinose above, floccose below, but 

 becoming at length smooth and shining. Gills narrowly ad- 



