LEUCOSPORI. 173 



Imbricated, strong-scented. Pilei very much crowded. Stem distinct above, Pleurotus. 

 connate below. Gills running down to the bottom of the free portion of the 

 stem. Spores oblong, narrow, oblique, whitish, tinged with pink. Somewhat 

 resembling A. ostreatus, but distinguished by its peculiar scent like that of 

 tarragon, and by its pale lilac spores. Not esculent. 



On elm posts and stumps. Uncommon. Spring-Autumn. 



On the authority of Berkeley, who still regards it as a good species, belong- 

 ing to Leucospori (as exceptional) notwithstanding the tinge of colour in the 

 spores, I retain it here. Name evocr/io?, sweet-smelling. Berk. Out. p. 135. 



B. & Br. n. 326. S. Mycol. Scot. n. 214. Hussey i. t. 75. Fr. Hym. Eur. 

 p. 174. A. (Claudopus) euosmus C. Hbk. n. 271. A. ostreatus var. euosmus 



C. II lust. PI. 196. 



374. A. revolutus Kickx. Pileus at first smoky then lead and 

 mouse colours, darker in the centre, fleshy, firm, elastic, convexo- 

 plane, smooth, slightly shining, depressed behind, margin in- 

 curved. Stem curt, thick, smooth or pubescent. Gills decurrent, 

 distinct, serrulated, white. 



Solitary, or a few joined together. It seems too closely allied to A. saligmis. 

 On trunks, poplar, &c. Penzance. 



It is clearly the same with A. corticatus Saund. & Sm. t. 4, f. 2. The stem 

 is short, but distinct and swollen. B. &= Br. Fries regarded A. corticatus 

 Saund. & Sm. as a remarkable variety of A. salignus, an opinion which must 

 give place to that of Berkeley. Name revolutus, unrolled. From the un- 

 rolling of the involute margin. Kickx. p. 158. Fr. Hym. Eur. p. 174. B. 

 6^ Br. n. 1933. C. Illust. PL 180. A. corticatus Saund. & Sm. t. 4. f. 2. 



375. A. salignus Abb. d. Schw. Pileus 5-7.5 cent. (2-3 in.) 

 broad, fuliginous-cinereous or ochraceous, fleshy, compact, spojigy, 

 somewhat dimidiate, horizontal, at first pulvinate, even, at length 

 depressed behind and here and there strigose, the incurved mar- 

 gin entire. Stem always short, firm, more or less tomentose. 

 Gills horizontal, hence less manifestly decurrent, separate behind, 

 but branched in the middle, crowded, dingy, often eroded at the 

 edge, not glandular. 



Among the larger and firmer species. Solitary, scarcely ever caespitose. It 

 is commonly confounded with A. ostreatus, but is certainly a different species. 

 Although the stature is in general the same, it is easily distinguished by the 

 pileus being compact, and more pulvinate when young, then depressed, by the 

 gills being thinner, more crowded, somewhat branched, but not anastomosing 

 behind, and dingy-fuliginous ; the spores also are dingy. 



On trunks, willow, alder, c. Uncommon. Sept.-Jan. 



Spores oblong or cylindrical-oblong, 14-15 mk. K.; 8x4ink. W.G.S. ; 

 8-10 x 3-4 mk. B. Name salix, willow. Abbild. d. Schwdm.fasc. 3. Fr. 

 Monogr. i. /. 246. Hym. Eur. p. 174. Berk. Out. p. 136. C. Hbk. n. 119. 

 Illust. PL 228. S. Mycol. Scot. n. 215. Letell. t. 687. Tratt. Austr. t. 8. 



376. A. acerinus Fr. Shining white. Pileus 2.5-10 cent, (i- 



