Pleurotus. 101 



[lutincola, Lasch. Caespitose, fuscous; p. glabrous; g. adnate 

 with a tooth running down stem to torn ring ; s. often excentric. 



[pulvinatus, Pers. P. pulvinate, rather wavy, glabrous, whitish, 

 disc tinged flesh-colour ; g. decur. crowded, white ; s. very short, 

 solid, hard. 



* * * * Veil absent ; gills deeply decur, ; pileus lateral, 

 sessile or produced behind into a short stem-like base. 



ostreatus, Jacq. Tufted. P. 7 15 cm. fleshy, shell-shaped, 

 ascending, blackish then grey or pallid ; g. rather distant, anasto- 

 mosing behind, pallid ; s. widening into p. very short, downy or 

 strigose at base ; sp. 10 12 x 4 5. Esculent. 



var. euosmus, B. Smell strong. Gills and spores tinged pink. 



var. columbinus, Q. P. dark bluish-grey. 



var. nudipes, Boud. S. quite glabrous. 



[ambiguus, Oud. Excentric. P. sessile or shortly stalked, 

 shining, blackish or deep violet, edge incurved; g. deeply decur. 

 anastomosing behind, lilac ; s. firm, elastic, thickened upwards, base 

 strigose. 



revolutus, Kickx. P. 9 15 cm. fleshy, firm, elastic, shining, 

 depr. behind, smoky-yellow then grey, edge incurved ; g. serrulate, 

 white ; s. 23 cm. short, thick, whitish ; sp. - . 



var. anglicus. Edge of p. not or very slightly incurved ; g. pallid 

 ochraceous. 



[Staringii, Oud. Excentric. P. lateral, produced at base into 

 a short oblique stem, suborbicular or reniform, exp. very glabrous, 

 smoky fuscous, centre paler ; g. white, anastomosing behind. 



salignus, Pers. P. 4 9 cm. fleshy, spongy, becoming depr. 

 behind and strigose, horizontal, yellow brown or dusky ; g. somewhat 

 branched, edge eroded, dingy; s. short, firm, tomentose; sp. 8 11 

 x3 4. 



| Saccardiamis, Arc. Subexcentric, usually sinuately lobed, even, 

 glabrous, at length exp. and wavy, tan or grey ; g. narrow, thin, 

 crowded ; s. striate, glabrous, grey or umber ; sp. 6 5 x 34. 



[roseocinereus, Allesch. P. thin, campan. edge becoming split 

 and striate, fibrously silky, rosy-grey ; g. very broad, pallid flesh-red ; 

 s. shining white, fibrously striato-sulcate ; sp. pale rufous, 5 7. 



acerinus, Fr. White. P. 38 cm. tough, circular, silky-villose ; 

 g. closely crowded, white then yellowish ; s. subobsolete, downy ; 

 sp. . 



[pathenopejus, Comes. Large, caespitose. P. excentric, gener- 

 ally dimidiate, conchate, elliptical or rounded, mouse-grey then pale, 

 viscid, squamulose ; g. deeply decur. base anastomosing, white then 

 tinged yellow ; sp. 9 12 x 4 6. 



[Gemmellari, Inzeng. Large, sessile. P. lateral, convex then 

 exp. yellowish, striate, upper stratum gelatinous; g. decur. broad, 

 anastomosing behind, white then sulphur. 



