444 PLEUBOTUS 



1441. P. Ruthae B. <fe Br. Cke. Illus. no. 275, t. 178, fig. 2. 



Miss Ruth Berkeley. 



P. 4 cm., whitish, or yellowish buff , fan- shaped, slightly hispid above 

 the gelatinous stratum; margin very thin, striate. St. 1-3 cm. x 5- 

 6 mm., reddish, lateral, hispid, arising from a fibrous mycelium. Gills 

 white with a reddish tinge, rather broad, acute behind, anastomosing, 

 interstices veined. On sawdust. Oct. Rare. 



1442. P. lignatilis Fr. (= Clitocybe lignatilis (Pers.) Quel.) Saund. & 

 Sm. Myc. Illus. t. 6, figs. 4-6. Lignatilis, woody. 



Dingy whitish. P. 3-10 cm., rarely central, generally more or less 

 excentric, occasionally wholly lateral, often reniform, thin but com- 

 pact, tough, convex, then plane, obtuse, often umbilicate, flocculoso- 

 pruinose\ margin involute, then expanded and undulato-lobed. St. 

 5-7-5 x 1-3 cm., 6-8 x 3-4 mm., sometimes absent, unequal, curved, 

 or flexuose, tough, pruinosely villose; base rooting, somewhat tomen- 

 tose. Gills shining white, often with a tinge of yellow, adnate, very 

 crowded, narrow, divergent in the lobes, undulate. Flesh white, firm. 

 Spores white, subglobose, 4 x 3/n. Smell strong of new meal. On 

 trunks especially beech, and on rotten wood. Sept. Oct. Uncom- 

 mon, (v.v.) 



var. tephrocephala Fr. refypos, ash-coloured; Ke<f>a\rf, head. 



Differs from the type in the more compact p., the black disc becoming 

 cinereous, and the white margin. 



1443. P. circinatus Fr. (= Clitocybe circinata (Fr.) Quel.) Fr. Icon, 

 t. 88, fig. 1. Circinatus, rounded. 



Entirely white. P. 6-9 cm., orbicular, horizontal, tough, convex, 

 then plano-disc-shaped, obtuse, covered with a shining, whitish, slightly 

 silky lustre. St. 3-8 cm. x 6-10 mm., elastic, central, or slightly ex- 

 centric, generally straight, sometimes curved, bluntly or attenuato- 

 rooted at the base. Gills adnate, slightly decurrent, crowded, broad. 

 Flesh white, firm. Spores white, globose, 3-4/4. Smell pleasant. On 

 beech, and brick stumps. Sept. Oct. Uncommon. 



C. Veil none; gills deeply decurrent; stem distinct, 

 somewhat vertical. 



1444. P. sapidus Schulz. (= Pleurotus cornucopiae (Paul.) Quel.) 

 Kalchbr. Icon. t. 8, fig. 1. Sapidus, pleasant. 



P. 512 cm., white, or light yellow, becoming fuscous, or umber, ex- 

 centric, lateral, subsessile, deformed, convex, disc depressed. St. 

 2-5-5 cm. x 6-16 mm., white, or pallid yellow, incrassated upwards and 

 dilated in the pileus, often branched, curved, ascending, arising from 

 a fleshy, bulbous, white base. Gills pallid, decurrent, rather distant, 



