542 Proceedings of the Ohio State Academy of Science. 



C.- Stipe eccentric ; pileus 3 cm. or more broad. 



D.' Pileus strigose, (lej)resse{l to intundibuliform, 

 rufescent-tan, purplish when young; stipe 

 hirsute. S. 616; H. 224; A. 135. 



P. nidis Fr. 

 D.- Pileus becoming- scaly, conchate, cinnamon or 

 paler; sti])e ])ube5cent at the base. S. 615; 

 H. 223; ]\r. 196; ^Ic. 232. 



P. conchatns Fr. 

 A.- Pileus glabrous. 



B.^ Lamellae decurrent or sub-decurrent. 



C} Stipe lateral ; pileus striate on the margin, less than 



3 cm. broad. ^1. 197 P. dealhatus Berk. 



C.- Stipe eccentric ; pileus usually more than 5 cm. broad, 

 margin not striate. 

 D.^ Stipe solid, pubescent or tomentose. 



E.^ Pileus cinnamon to paler; stipe pubescent at 

 the base. S. 615; H. 22^^; ^I. 196; Mc. 



232 P. cojichatns Fr. 



E.- Pileus flesh-colored to violaceous; stipe with 

 gray or violaceous down. S. 615 ; H. 225 ; 



Mc. 233 P. toritlosus Fr. 



D.'- Stipe spongy-stuffed, glabrous. S. 617. 



P. robinsonii B. & ^^Tont. 

 B.- Lamellae free. S. 620 P. sulliraiitii Mont. 



Notes. 



Berkeley's description of P. angustatus agrees well with the 

 plant we know as Pleurotus petaloides Fr. Berkeley says : "Lea 

 describes it as tough when fresh, and it is therefore placed in the 

 genus Panus." 



The plants now known as P. rudis have been reported also 

 as Lentinus strigosus Fr., and Lentinus lecomtei Fr. 



Neither P. robinsonii nor P. sullivantii have been identified 

 since Sullivant's time. 



