Murrill: Boletaceae of North America 155 



34. Ceriomyces sordidus (Frost) 



Boletus sordidus Frost, Bull. Buffalo Soc. Nat. Hist. 2 : 105. 

 1874. 



Described from specimens collected by Frost on recent excava- 

 tions in woods near Brattleboro, Vermont. Represented by four 

 plants in the Frost herbarium, but rather difficult to connect with 

 any specimens collected since. It has many characters in common 

 with C. fumosipes, but is not reticulate-rimose. The cap is sor- 

 did, flesh white, tubes white, changing to bluish-green, and stem 

 brownish, tinged with green above. 



35. Ceriomyces communis (Bull.) 



Boletus communis Bull. Herb. Fr. pi. 393 A, C. 1788. 



Boletus chrysenteron Bull. Herb. Fr. 328. 1791. 



Versipellis chrysenteron Quel. Ench. Fung. 157. 1886. 



Xerocomus chrysenteron Quel. Fl. Myc. 418. 1888. 



Boletus f rat emus Peck, Bull. Torrey Club 24: 145. 1897. (Type 



from Auburn, Alabama.) 

 Boletus umbrosus Atk. Jour. Mycol. 8: 112. 1902. (Type from 



Cayuga Lake, New York.) 



This species is widely distributed and very common in woods 

 and on mossy banks throughout the temperate regions of Europe 

 and North America, and it has even been collected in certain parts 

 of the Bahamas. As is the case with C. subtomentosus, a near 

 relative, the sporophore is spongy-tomentose in texture and dries 

 easily, although it is fleshy enough for food. The cap and stem 

 are usually red, and the tubes yellow and large ; the surface of the 

 cap is soft, finely floccose, and often cracked. There are a 

 number of varieties which are rather confusing at times. 



Doubtful Species 



Most of these might doubtless be referred to well-known 

 species if we knew more about them. 



Boletus badiceps Peck, Bull. Torrey Club 27: 18. 1900. De- 

 scribed from notes and drawings made by Mcllvaine from speci- 

 mens collected in oak woods near Philadelphia, Pennsylvania. 

 Types destroyed. 



