328 AGARICUS. 



Psilocybe. p. 431. Hym. Eur. p. 299. Berk. Out. p. 172. C. Hbk. i?. 435. Illust. PI. 

 608. B. S. Mycol. Scot. n. 395. 



734. A. physaloides Bull. Pileus 7.5-10 cent. (3-4 in.) broad, 

 fuscous-purple t slightly fleshy, campanulate then expanded and at 



length flattened, with a prominent umbo, and at length depressed 

 round the umbo, smooth, even, pelliculoso-mscid, shining. Stem 

 2.5 cent, (i in.) and more long, fistulose> filiform, flexile, adpres- 

 sedly fibrillose, becoming pale, date-brown at the base. Veil not 

 manifest. Gills adnate, somewhat decurrent, crowded, equally 

 attenuated from the stem, pallid ferruginous-fuscous. 



Spores fuscous-purple, almost black on white paper, but violaceous-lilac on 

 a black ground. Very much allied to A. bnllaceus and A. coprophilus. A. 

 inquilinus is easily confounded with it. 



On dung, &c. Uncommon. Sept. 



Spores 8x6 mk. W. G.S. ; 12 x 7 mk. B. & Br. Name <u<raAis, a bladder ; 

 etSos, appearance. Bull. t. 566. f. i. Fr. Monogr. i. p. 432. Hym. Eur. p. 

 300. B. & Br. n. 690. Berk. Out. p. 172. C. Hbk. n. 436. Illust. PL 609. 

 A. S. Mycol. Scot. n. 396. 



735. A. atro-rufus Scheeff. Pileus black-rufous or purple- 

 fuscous, but becoming very pale when dry, slightly fleshy, hemi- 

 spherico-convex, obtuse, smooth, striate at the margin when in 

 fullest vigour, without striae when dry. Stem thin, scarcely 2 

 mm. (i lin.) thick, fistulose, equal, at first somewhat fibrillose, then 

 smooth, pallid date-brown, slightly pruinate at the apex. Gills 

 adnate, somewhat decurrent, triangular, plane, umber or purple- 

 umber. 



There are two forms : A. stem longer, fibrillose, pileus smaller. B. stem 

 curt, scarcely 2.5 cent, (i in.), smooth, pileus bullaceous. 



In mixed wood. Glamis, 1876. Nov. 



Spores ovoideo-sphseroid, 6-8x4-5.5 mk. K. Name ater, black; rufus, 

 red. Schceff. t. 234. Fr. Monogr. i. p. 433. Hym. Eur. p. 300. B. 6* Br. 

 n. 1770. S. Mycol. Scot. n. 397. 



736. A. nucisedus Fr. Pileus light yellowish, slightly fleshy, 

 convex, obsoletely umbonate, even, slightly silky when dry. Stem 

 2.5-5 cent. (1-2 in.) long, fistulose, slender, pallid, somewhat atten- 

 uated downwards, becoming fuscous, white-villous. Gills adnate, 

 broad, plane, fuscous then umber-black. 



Stem often pruinate at the apex. It differs from A. atro-rufus in its habitat 

 being epiphytal, in the stem being paler and tougher, attenuated downwards 

 and white-villous at the base, in the pileus being somewhat umbonate slightly 

 silky and becoming yellow when dry, and in the gills being scarcely decurrent. 

 Exactly the habit of A. inquilinus, but differing chiefly in the fuscous spores. 

 A similar plant occurs on the nuts of hazel, but wholly umber, becoming clay- 

 yellow when dry. 



