Pleurotus. 99 



umbil. central or excentric, yellowish white with concentric brown 

 scales ; g. adnato-decur. tinged yellow, edge eroded ; s. cylindric with 

 concentric brown scales, ring membranaceous, fugacious. 



subpalmatus, Fr. P. 7 12 cm. Caespitose. Convex then depr. 

 rugulose, rufescent, cuticle gelatinous ; g. adnate, connected behind, 

 dingy ; s. 3 4 cm. incurved ; sp. . 



Remarkable for the variegated flesh. 



[coripellis, Fr. P. rigid, glabrous, moist, somewhat bay, thick 

 pellicle separable, disc compact, umb. ; g. arcuato-adnate, plane, 

 crowded, white ; s. excentric, vertical, rigid, fibrillosely striate, 

 whitish. 



P. almost black but fawn or yellow-brown when dry. Flesh tinged 

 fuscous. 



craspedius, Fr. Caespitose. P. 814 cm. thin, crenate or lobed, 

 brick-red or paler, glabrous ; g. adnate, narrow, crowded, white ; s. 

 4 7 cm. solid, elastic, glabrous, pallid : sp. 5. 



fimbriatus, Bolt. P. 4 7 cm. thin, plane then depr. margin 

 sinuate or lobed, hygr. hyaline, whitish ; g. adnate, closely crowded, 

 white ; s. 2 3 cm. firm, compr. downy ; sp. - . 



lignatilis, Fr. Whitish. P. tough, convex then plane, umbil. 

 irreg. floccosely pruinose then glabrous ; g. adnate, crowded, narrow, 

 shining white ; s. irreg. rather downy ; sp. 4 x 3. 



var. tephrocephalus, Fr. P. more compact, disc black then grey, 

 edge white. 



Ruthae, B. and Br. P. 37 cm. more or less fan-shaped, whitish 

 or yellowish-buff, cuticle gelatinous, rather hispid ; g. anastomosing 

 behind, white then reddish, veined ; s. 1 3 cm. reddish, hispid ; 

 sp. - . 



Differs from P. pantoleucus in g. anastomosing behind, and not 

 decurrent. 



circinatus, Fr. White. P. 57 cm. plane, orbicular, silky- 

 pruinose ; g. adnato-decur. crowded ; s. 2 5 cm. equal, glabrous, 

 rooting; sp. - . 



[olearius, D. C. Caespitose. P. subexcentric plane or umbil. dry, 

 reddish tawny or deep brown ; g. decur. narrow, yellow ; s. solid, 

 firm, reddish-brown ; sp. 5 x 4. 



Gills phosphorescent. 



var. carpini ( = P. carpini, Fr.). P. convexo-exp. angular, 

 rivulosely scaly when dry ; s. slender, short, excentric or lateral ; g. 

 adnexed, thin, rusty. 



[juglandinus, Kalchbr. P. plano-convex, even, glabrous, dingy 

 golden-yellow, rather lobed ; g. decur. distant, ends narrowed ; s. ex- 

 centric, solid, brown- pilose ; sp. 5'5 x 2 '5. 



* * * Gills decurrent ; stem almost vertical. 

 [aquifolii, Fr. P. rather wavy, soft, convex then plane, dusky 

 tan; g. thick, dusky, joined in a ring behind; s. stout, equal, white. 

 Edible. 



72 



