LEUCOSPORI. 89 



then infundibuliform, even, smooth, hygrophanous, somewhat ciltocybe. 

 shining when moist, becoming pale and opaque when dry, undu- 

 lated when luxuriant ; flesh scissile, watery, somewhat of the same 

 colour as the pileus ; the margin remaining long involute. Stem 

 5-10 cent. (2-4 in.) long, 6-8 mm. (3-4 lin.) thick, spongy-stuffed, 

 elastic, at length also hollow, attenuated upwards, fuscous^rz'/- 

 lose, somewhat reticulated, of the same colour as the pileus or a 

 little paler, naked (not pruinose) at the apex, villous at the base. 

 Gills adnate, decurrent on account of the changed form of the 

 pileus, joined behind, distant, cinereous -fuscous, occasionally 

 branched. 



Very changeable. Commonly becoming black-umber, but varying paler fus- 

 cous-cinereous ; also flesh-colour then tan, pale cinnamon, becoming fuscous 

 then clay or tan (Bull. t. 575. /. F //".), the gills whitish, becoming fuscous, 

 rufous (Bolt. t. 59. ) When old the margin is expanded, nay slightly striate. In 

 sterile ground, the stem is more slender, only 2 mm. (i lin.) thick upwards, 

 fibrilloso-striate ; the pileus somewhat membranaceous, at the first deeply um- 

 bilicate, the margin naked ; the gills grey. It occurs also on rotten wood. 



In woods, &c. Common. Aug.-Nov. 



Spores 8x5 mk. W.G.S.; 10-12x5-6 mk. B. Namecyathus, a cup; 

 forma, form. Cup-shaped. Monogr. \. p. 128. Hym. Eur. p. 100. Berk. 

 Out. p. in. C. Hbk. n. 101. Illust. PI. 113. S. Mycol. Scot. n. 102. 

 Hussey ii. t. i. Gonn. & Rab. t. 9. /. i (/. 2 monstrous). Hoffm. Anal. t. 3. 

 /. i. Bull. t. 575. / M. &c. Vaill. t. 14.7. 1-3. Bolt. t. 145. Holmsk. Ot. 

 ii. t. 41. Sow. t. 363 (various forms, no good figure). 



179. A. expallens Pers. Pileus when young somewhat fleshy, 

 convexo-plane, obtuse, 2.5-5 cent. (1-2 in.) broad, even, cinereous- 

 fuscous, at first sprinkled with white silky dew, then plano-infundi- 

 buliform, livid, the disc slightly fleshy, the soon expanded margin 

 membranaceous and striate. Stem 5 cent. (2 in.) long, about 4 

 mm. (2 lin.) thick, rarely more, flocculose internally, soon hollow, 

 tough, equal, smooth, white-silky at the apex. Gills decurrent, 

 acute at both ends, thin, slightly distant, soft, white-cinereous. 



Wholly watery, very hygrophanous ; pileus when dry hoary-whitish or tan 

 colour. It is smaller, earlier, and paler than A. cyathiformis, and can with 

 difficulty be distinguished from thinner forms of that species. The gills are 

 more crowded. 



In mixed wood. Glamis, 1874. Aug. 



Name ex, and palleo, to be pale. In ' Icones ' Fries gives the form origin- 

 ally described as A. expallens by Persoon, and represented in Bull. t. 575. /. 

 i. G., and the form described under the same name by himself, and repre- 

 sented in Icon. t. 56. /. 2, as specifically distinct, and regards A. expallens 

 Pers. (Fr. Icon. t. 56. f. 3.) as a form of A. cyathiformis. In ' Hym. Eur.,' 

 however, he includes the two forms under one name. Pers. Syn. p. 461. Fr. 

 Monogr. \.p. 128. Hym, Eur. p. 100. Icon. t. 56. f. 2. B. trivialis, becom- 

 ing fuscous, stem longer. Bull. t. 575. /. i. G. A. expallens Fr. Icon. t. 56. 



