524 Murrill: The Boleti of the Frost herbarium 



turn, only a form of B. luridus. Even if Frost's species had been 

 distinct, the name could not have been retained on account of B. 

 Spraguei B. & C, published two years previously for B. pctus 



Peck. 



Boletus strobilaceus Scop. 



This common species is represented by five good plants. 

 Frost later changed the generic name to Strobilomyces, in accord- 

 ance with Berkeley's classification. 



Boletus subtomentosus L. 



Represented by nine rather poor specimens, some of which 

 may be B. chrysenteron. 



Boletus tenuiculus Frost. 



Three poor specimens represent this species, the central one 

 apparently quite distinct from the other two. The description, 

 also, is very brief, leaving the identity of the species in douo , 

 unless better authentic specimens exist elsewhere. 



Boletus unicolor Frost. 



This species was published by Peck in 1889 from manusc ^ 

 only. Frost's collection contains a single sheet with five p 

 plants, which add little to the description. 



ly fair 



Boletus versipellis Fries. 



Represented by six good plants and four that are on 

 They may be only a reddish brown form of B. scaber. 



Boletus viridarius Frost. Ilected 



This species, not distinct from B. Clinionianus, was co^ ^ 

 on grass plats in October and November. It is represen ^^ 

 sheet with seven poor specimens and a piece of car 

 ing six good ones. 



Boletus viscosus Frost. co l- 



The collection contains twenty-one plants, all rath ^.° ke( ' w j t h 



lected in pine or fir woods in autumn. They are -...jcmed 



very short stem, well deserving the name d. , v a form 



them by Peck in the 38th Report, although probab ly o ^ 

 of B. grannlatm. The name B. viscosus was untena 

 already been used by Venturi. 



