540 Proceedings of the Ohio State Academy of Science. 



D.^ Margin even. 



E.^ Lamellae sinuate-decurrent, broad. S. 581 ; 

 M.B. i3i:42;H.228;St.2:i55; A. 135; 



Mc. 230 L. lepideus Fr. 



E.^ Lamellae decurrent, not sinuate, rather nar- 

 row. M. B. 131 : 43 L. spretus Peck 



B.^ Pileus glabrous, depressed to infundibuliform. 



C.^ Stipe sulcate, glabrous; lamellae broad. S. 594; M. 

 B. 131:45; St. 2: 156; M. 195; H. 229; Mc. 239; 



L. cochleatus Fr. 

 C.- Stipe not sulcate, fibrillose; lamellae narrow. S. 595; 



M. 19s L. curtisii Sacc. & Cub. 



A.^ Plants sessile, without distinct stipe. 

 B.^ Pileus costate-corrugate. 



C.^ Pileus reddish-brown, tomentose at maturity. S. 



608; M. B. 131 : 45 ; M. 196 L. ursinus Fr. 



C." Pileus tan or alutaceous, surface broken up into 

 scales or fibrous teeth at maturity. S. 609; M. 



196; St. 2 : 157 ; H. 226-7 L. vulpinus Fr. 



B.^ Pileus even, not costate. 



C.^ Pileus densely strigose, brown-tawny. S. 611; M. 



196 L. pelliculosus Schw. 



C.- Pileus tomentose only, reddish-brown. S. 608 ; M. B. 

 131 : 45 ; M. 196 L. ursinus Fr. 



Notes. 



Morgan lists L. lecomtei Fr. and L. strigosus Fr. He later 

 decided that the plants so referred were species of Panus (P. 

 rudis Fr.). 



L. caespitosus Berk., reported by Lea and Morgan is not a 

 Lentinus. Pleurotus caespitosus B. & C. is another name for the 

 same plants. Lloyd believes it is the plant now known as Clito- 

 cybe monadelpha Morg. and the description bears out the opinion. 



Peck separated L. spretus from L. lepideus because the 

 lamellae are not sinuate and the spores are smaller. A collection 

 was made at Oxford in 1910. 



