LEUCOSPORI. 117 



and internally fuscous. Gills adnate, scarcely decurrent, at first Collybia. 

 arcuate, then plane, rather broad, somewhat distant, whitish then 

 grey, becoming fuscous. 



Inodorous, late ; a small but firm species. Widely removed from all the 

 preceding species in this group. Between Collybia and Omphalia. 



On burnt soil. Uncommon. Nov. 



Spores 5x4 mk. IV. G.S. Name ater, black, dark - coloured. Fr. 

 Monogr. i. /. 175. Hym. Eur. p. 127. Icon. t. 70. f. i. Berk. Out. p. 120. 

 C. Hbk. n. 165. Illust. PL 155. S. Mycol. Scot. . 135. 



241. A. ambustus Fr. Pileus 2.5 cent, (i in.) broad, at first 

 fuscous, then fuscous-livid, somewhat membranaceous, convex then 

 plane, at length depressed, umbonate 'with a minute papilla, 

 smooth, at first even, then slightly striate. Stem 2.5 cent, (i in.) 

 long, rarely more, not 2 mm. (i lin.) thick, stuffed, at length fistu- 

 lose, truly cartilaginous, tense and straight, livid-fuscous, pruinose 

 when young, naked when full grown. Gills adnate, with a decur- 

 rent tooth, crowded, plane, lanceolate, becoming fuscous. 



Very small, tough, often gregarious, inodorous, wholly fuliginous. Very 

 closely allied in reality to A. atratus, but as that species inclines to Omphalics, 

 this inclines to Alycenee, but the margin being at the first involute shows that it 

 is a true Collybia. 



On scorched ground. Kew, c. 



Spores 5 mk. W. P. TXameamburo, to burn. From its growing on burnt 

 ground. Fr. Monogr. i. p. 175. Hym. Eur. p. 127. Icon. t. 70. f. 2. B. cr" 

 Br. n. 1409. C. Illust. PI. 155. 



** Gills very broad, more or less distant. 



242. A. laceratus Lasch. Pileus 4 cent. (\y 2 in.) broad, fulig- 

 inous, at length becoming pale, fleshy-membranaceous, campanu- 

 late, somewhat blunt, moist, streaked with fuscous lines, cracked, 

 slightly shining. Stem 5-10 cent. (2-4 in.) long, stuffed then 

 hollow, firm, twisted, fibroso-striate, floccoso-pruinose at the 

 apex, at length compressed, slightly shining. Gills adnexed, 

 distant, broad, thick, white-grey. 



Somewhat caespitose. Occupying an irregular place among Collybics, but 

 allied to A. platyphyllus. 



In pine woods. Rare. Autumn. 



Spores ovoid-spherical, 6-7 mk. Q. Name lacero, to tear. Torn. Lasch. 

 Fr. Hym. Eur. p. 127. Berk. Out. p. 120. C. Hbk. ?i. 163. 



243. A. murinus Batsch. Pileus 2.5 cent, (i in.) and more 

 broad, fuscous-brown, becoming pale when old, slightly fleshy, 



