524 Proceedings of the Ohio State Academy of Science. 



H.^ Flesh and lamellae staining 

 brown where injured. 

 I.^ Pileus reddish-brown; usu- 

 ally much corrugated. S. 

 449; N. A. F. 197; H. 

 177-178; Mc. 178; A. 

 116; P. R. 38: 130. 



L. corrugis Peck 



I.^ Pileus yellowish-buff, even or 



slightly rugose. S. 14: 



94; N. A. F. 197; Mc. 



178; B. T. 23:412. 



L. luteola Peck 

 H.- Flesh and lamellae not staining 

 brown; pileus golden-fulvous. 

 N. A. F. 197; M. B. 75; 18. 



L. snhvelutina Peck 



Notes. 



The nomenclature in the above key is that employed by Miss 

 Burlingham in her monograph of the genus in the North Amer- 

 ican Flora. The genus is commonly known as Lactarius, which 

 Miss Burlingham regards as merely a variation in spelling. L. 

 lactiflua is commonly known as L. volema, and L. rusticana is 

 usually published as L. pyrogala. In these cases both names are 

 given. 



L. distans Peck, reported by Morgan and Hard, is now re- 

 garded by Peck as a synonym for L. hygrophoroides. L. sordida 

 Peck is a synonym for L. turpis. 



L. vieta Fr., L. calceola Berk, and L. zonaria (Bull.) Fr. 

 were reported by Lea and included in Morgan's list. The first 

 has not been otherwise reported from North America. L. cal- 

 ceola was probably an abnormal form of L. hygrophoroides. Of 

 the three only L. zonaria is included in the key and its occur- 

 rence in Ohio is doubtful. 



L. torminosa has not been reported for Ohio but its range 

 is such as to indicate that it will likely be found here. 



