The Agaricaceae of Ohio. ;31-"> 



E.-' Laiiicllac rather broad; pileus at first resu- 

 jiinati,', becoming somewhat reniform, vis- 

 cous when iiicist. S. 378; St. 180; iM. 80. 



/'. olgidiis !'>. 

 D.- Pileus silky, villous or with somewhat pointed 

 scales when fresh; not glabrous. 

 E." Pileus white or whitish, silky. S. 374; M. 



80 P. pinsitiis J">. 



E.- Pileus darker in color when fresh. 



F.' Pileus mouse-gray, usually with tufted 

 scales. S. 376; M. 80; Mc. 146; St. 



179 P. mastrucatus Fr. 



F.- Pileus blackish-blue or brownish-gray, 

 villous, not scaly. S. 377; P. R. 39: 

 65 ; St. 179 P. atrocoerulius Fr. 



Notes. 



P. nidulans Pers. is now usually placed in the genus Claud- 

 opus on account of its salmon-colored or pink spores. P. sapidus, 

 which has pale lilac spores, is usually regarded as a Pleurotus 

 because of its obvious relations with some species of that genus. 



Plants formerly referred to P. scrofinoides Peck and P. 

 abscondcns Peck, and so listed by I lard, are now regarded by 

 Peck as varieties of P. serotinus and P. lignatilis respectively. 



Kellerman and Werner i j). 305 1 include P. acerinus in the 

 list of Ohio plants. This seems to be the only reference to this 

 species in ( )]iio literature. 



Plants referred by IMorgan to P. niger Schw. were probably 

 V. applicatus. wnich is a rather common species in southwestern 

 Ohio. 



The ])lants referred to 1'. circinatus by Hard were probably 

 P. lignatilis. He says it may be known by the white gills. The 

 lamellae of T^. lignatilis are white. 



The occurrence of P. pinsitus in Ohio is rather doubtful. 



P. caespitosus I'. <!v C. was first pul)lislied as a Lentinus, 

 then as a Pleurotus. It is probably the plant now known as 

 riitocybe monadelpha Morg. 



