LEUCOSPORI. 175 



broad, distinct, not branched or anastomosing at the base, livid or Pieuroms. 

 cinereous. 



The primary form is solitary. The pileus is cinereous-tan when dried. It 

 differs from A. salignus alike in the definitely lateral stem, and in the thin 

 flaccid pileus. Var. Juglandis caespitose, smaller, attenuato-sessile at the 

 base, becoming fuscous. 



On trunks. Aberdeen Fungus Show, 1874. Sept. 



Spores 8-10x2-3 mk. B. Name pulmo, lung. From its texture. Fr. 

 Monogr. i. p. 248. Hym. Eur. p. 176. B. & Br. n. 1522. S. Mycol. Scot. 

 n. 216. Paul. t. 21. Var. Juglandis Fr. Icon. t. 87. /. 2. 



379. A. serotinus Schrad. Pileus 1-7.5 cent - (K~3 in -) broad, 

 yellow-green, fuliginous-olivaceous, &c., thick, at first gibbous- 

 convex, then plane and ascending, reniform or obovate, even, 

 smooth, covered with a pellicle which is viscous in wet weather; 

 margin at the first shortly involute, at length expanded, somewhat 

 repand; flesh whitish. Stem not exceeding 2.5 cent, (i in.) long, 

 but most frequently shorter and obliterated, lateral, solid, thick, 

 irregularly shaped, becoming yellow, dotted with fuliginous squam- 

 ules, which are crowded into a fuliginous zone near the gills. 

 Gills ending determinately, not truly decurrent, narrow, crowded, 

 often branched, typically light yellow. 



The stem is rarely fringed with lobes all round as if the pileus extended on 

 all sides. The gills appear as if decurrent when the pileus is arched or con- 

 chate. They vary in colour, more rarely pallid and flesh colour, also with the 

 edge dotted-fuliginous from the squamules of the stem ascending upon them. 

 The flesh is almost tasteless. Gregarious or imbricato-csespitose, very fleshy, 

 compact when young, then softer. Widely distinct from all others. 



On trunks, ash and birch. Uncommon. Nov.-Dec. 



Name serotinus, late. Schrad. in Abbild. d. Schwamm. 3. Fr. Monogr. 

 i. p. 249. Hym. Eur. p. 176. Berk. Out. p. 136. C. Hbk. n. 121. Illust. PL 

 258. b. S. Mycol. Scot. n. 217. A. stipticus var. Fl. Dan. t. 1293. f. 2. 



380. A. mitis Pers. Pileus about 12 mm. (}4 in.) broad, rufes- 

 cent or whitish, slightly fleshy, continuous with the stem in a 

 straight line (not reflexed) and horizontal, reniform, even, smooth, 

 and without a viscid pellicle; flesh thin, pliant, white. Stem 12 

 mm. (y z in.) long, sometimes however very short, solid, definitely 

 lateral, compressed and dilated upwards, sprinkled with white 

 mealy squamules. Gills ending definitely, very crowded, linear- 

 lanceolate, simple, white. 



Gregarious, but scarcely ever caespitose, tough, insipid. In form and stature 

 it is like Panus stipticus, which is cinnamon, coriaceous, distinct in its gills 

 being connected by veins, c. 



On dead fir, &c. Common. Autumn-Winter. 



