MURRILL : BOLETACEAE OF NORTH AMERICA 



17 



Flesh quickly and distinctly changing to blue when wounded. r. 5". luridus. 

 Flesh scarcely changing color when wounded ; pileus shining, 



blood-red ; stipe blood-red, conspicuously reticulated. 2. 5". Frostii. 



i. Suillellus luridus (Schaeff.) 

 Boletus luridus Schaeff. Fung. Bav. 3: pi. 107. 1770. 

 Boletus tuber osus Bull. Herb. Fr. pi. 100. 1782. 

 Boletus rubeolarius Bull. Herb. Fr. 326. pi 490. f. 1. 1791. 

 Boletus Satanas Rostk. in Sturm, Deutsch. Fl. 5 : 97. pi. 31. 1844. 

 Boletus Sullivantii B. & C. Syll. Crypt. 152. 1856. (Type from 

 Ohio.) 



Boletus vermiculosus Peck, Ann. Rep. N. Y. State Mus 23: 130. 



1872. (Type from New Baltimore, New York.) 

 Boletus magnisporus Frost, Bull. Buffalo Soc. Nat. Hist. 2 : 103. 



1874. (Type from Vermont.) 

 Boletus firnius Frost, Bull. Buffalo Soc. Nat. Hist. 2 : 103. 



1874. (Type from Vermont.) 

 Boletus Spraguei Frost, Bull. Buffalo Soc. Nat. Hist. 2 : 103. 



1874. (Type from Vermont.) Not B. Spraguei B. & C. 



1872. 



Boletus subvelutipes Peck, Bull. N. Y. State Mus. 2 : 142. 



1889. (Type from New York.) 

 Boletus Underwoodii Peck, Bull. Torrey Club 24: 145. 1897. 



(Type from Alabama.) 

 Boletus chamaeleontinus Atk. Jour. Myc. 8: 112. 1902. (Type 



from Cayuga Lake, New York.) 



This species is abundant, widely distributed, and exceedingly 

 variable, especially in the color of the cap and in the surface 

 characters of the stem. I have usually found it on clay banks 

 or roadsides in open deciduous woods, but it has been reported 

 from many different habitats. It has been generally considered 

 poisonous, and should be regarded at least as suspicious. 



2. Suillellus Frostii (Russell) 

 Boletus Frostii Russell ; Frost, Bull. Buffalo Soc. Nat. Hist. 2 : 



102. 1874. (Type from Vermont.) 

 Boletus alveolatus B. & C. ; Frost, Bull. Buffalo Soc. Nat. Hist. 



2: 102. 1874. (Type from New England.) 



