. British fungi (Hymenomycetes). Fungi -- Great Britain. COPRINARII. 343 not variegated, and not becoming fuscous or purple. /;/ appear- Psathyiella. ance wholly like Psathyra. Spores black on a white ground, but in one or two species slightly fuscous when deposited on a black ground. Fr. Hy7ii. Eur. p. 313. The straight margin oT the pileus is adpressed to the stem. Thinner than Psathyra. * Stem tense and straight, smooth, ** Stemflcxuons, pruinate at the ii) XXXVI. Agaricns (Psathyrella) disseniinatus. One-half natural size. * Stem tense and straight, sniootJi. 11% A. subatratus Fr. â
. British fungi (Hymenomycetes). Fungi -- Great Britain. COPRINARII. 343 not variegated, and not becoming fuscous or purple. /;/ appear- Psathyiella. ance wholly like Psathyra. Spores black on a white ground, but in one or two species slightly fuscous when deposited on a black ground. Fr. Hy7ii. Eur. p. 313. The straight margin oT the pileus is adpressed to the stem. Thinner than Psathyra. * Stem tense and straight, smooth, ** Stemflcxuons, pruinate at the ii) XXXVI. Agaricns (Psathyrella) disseniinatus. One-half natural size. * Stem tense and straight, sniootJi. 11% A. subatratus Fr. â Pileus cent, (i in.) high, and when ex- panded 5 cent. (2 in.) broad, tiniber- 7'ufeseent, pallid-rafescent when dry, membranaceous, campanulate, ob- tuse, smooth, even, slightly striate round the margin. Stem cent. (4-5 in.) long, 2 mm. (i lin.) and more thick, fistulose, tense and straight, equal, even, smooth, not pruinate, beconmtg pale- white. Gills adnexed in the top of the cone, adnate when the pileus is more expanded, linear, scarcely beyond 2 mm. (i lin.) broad, crowded, fuliginous-blackish, almost umber, edge of the same colour. Spores shining black. Gregarious, fragile. The above is the typical form. In an intermediate form the stem is shorter, cent. (2-3 in.); in a smaller form the stem is only cent, (i in.), the pileus somewhat umbonate, fuligin- ous when moist, somewhat olivaceous, the gills ventricose, 4 mm. (2 lin.) broad. On rich ground. Batheaston, 1869. Sept. Spores pruniform, 12-15 ^''^k. Q. Nameâsub, and ater, dead black. Black- ish. Fr. Monogr. ii. p. 305. Hym. Eur. p. 313. B. of Br. n. 1260. â 773. A. gracilis Fr.âPileus i cent. (K-i in.) broad,/////>- ittous, livid, &c., when dry tan, rosy or whitish, hygrophanous, membranaceous, cainpamtlate, obtuse, smooth, eveii, slightly and pellucidly-striate only round the margin. Stem cent. (3 in.) and more long, scarcely 2 mm. (i lin.) thick, fistulose, remarkably tense a
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