58 YORKSHIRE NATURALISTS UNION. 



300. Pleurotus pantoleucus Fr. 



S.\\'. — -Potridings Wood (F.F., 1901). On dead branch. 



301. Pleurotus ostreatus Jacq. 



Mid W.— Esholt ('Nat.', June 1881). Harewood (Tr. 

 Y.N.U. ix.). Haddlesey (Lees' Fl.). Horsforth (J. W. 

 Taylor, 'Nat.', Feb. 1901). 



S.W". — Almondbury, and Shelley (Hud. Bot. Soc.) Coxley 

 Valley. Luddenden Dean, Hx. (Fl. Hx.) Ecclesall Wood, 

 Sheffield. 



N.E. — Scarborough. Newsham Carr (J. A. Wheldon). 



S.E. — Boynton (W.W.S.). Cliff Common, Selby. 



N.\\'. — Masham (' Nat.', Jan. 1902). 



Edible. In dense tufts on trunks and stumps. 

 \'ar. columbinus Bres. 



S.\\'. — Skircoat, Hx. On live laburnum, from a longitudinal 

 slit in the trunk : Heath, Hx. on ash ; Greetland. — West 

 Vale Nat. Soc. (Fl. Hx.). Gledholt, Huddersfield, on live 

 ash, 1902 (T. W^ Woodhead). 



N.W. — ^lasham (' Nat.', Jan. 1902). 

 \ ar. euosmus Berk. 



S.W .— Liversedge, on decaying poplars (' Nat.', Sep. 1891), 

 Huddersfield (Lees' Fl. under Claudopns). 



Mid W.— Bolton Woods (Fl. Skipt.). 



302. Pleupotus revolutus (Kickx.) 



N.E. — Thirsk. On the trunk of a black poplar (' Nat.', Feb. 

 1899). Differs from P. corticalis in the gills not anastomosing. 



303. Pleurotus salignus (Pers.). 



S.W. —On tree trunk. Idle, 1887 (Lees' FL). Hebden 

 Bridge; Heath, Hx. (Fl. Hx.). Scammonden (A. Clarke). 

 N.W'. — jNIasham (' Nat.', Jan. 1902). 



304. Pleupotus acerinus Fr, 



N.E.— Stokesley(Exc. 1899). Mulgrave Woods (F.F., 1900). 



305. Pleupotus serotinus (Schrad.). 

 S.E.— Boynton (W.W.S.). 



S.W.— Northdean Wood, Hx. On the base of a stout 



Trans. Y.N.L'., 1904 (pub. 1904). Bot. Series, Vol. 6, 



