74 OUTLINES OF BRITISH FUNGOLOGY. 



monly smooth or slightly villous at base; gills adnate, 

 obtuse behind, very thin, crowded, narrow, at length 

 lacerated, shining white. 



On trunks and rotten wood. 



.'597. A. (Pleurotus) fimbriatus, Bolt. (p. 135) ; 3 in. 



398. A. (Pleurotus) Ruthae, B. and Br.; pileus H in., 

 dirty- whitish, fan-shaped, slightly hispid above the gelatin- 

 ous stratum, the very thin margin striate ; stem short, 

 lateral, hispid ; gills white, rather broad, acute behind, 

 anastomosing, with a reddish tinge like that of the stem, 

 interstices veined; mycelium fibrous. 



On sawdust. Coed Coch. 



399. A. (Pleurotus) lignatilis, Fr. ; pileus 3-4 in., 

 dingy whitish, commonly cxcentric, rarely lateral, often 

 reniform, iieshy, thin, compact, tough, convex, then plane, 

 dbtuse and often umbilicate, fiocculoso-pruinate, at length 

 plane, repand ; margin at first involute, then expanded, 

 undulato-lobed ; stem stutted, then hollow, thin, unequal, 

 curved or flexuose, tough, whitish, pruinato-villous, rooting 

 and some^vhat tomentose at base ; gills adnate, crowded, 

 narrow, unequal, shining white. 



On beech, etc. Burnham Beeches. 



400. A. (Pleurotus) circinatus, Fr. ; solitary, wholly 

 white, not hygrophanous ; pileus 3 in., orbicular, horizontal, 

 fleshy, tough, convex, then plane, flat, obtuse, even, but 

 covered over with a shining whitish-silky lustre ; stem 

 stuffed, elastic, equal, central, or slightly cxcentric, com- 

 monly straight, smooth, bluntly rooted at base ; gills 

 adnate, slightly dccurrent, crowded, broad, white. 



On rotten wood. Birch. Rare. Odour pleasant. 



