

Murrill: The Boleti of the Frost herbarium 519 

 Boletus cyanescens Bull. 



Six good plants are preserved. Frost has marked it "rare." 

 Boletus decorus Frost. 



Represented by three good specimens, which may be referred 

 to B. ednlis. 



Boletus edulis Bull. 



One sheet contains two poor plants with their stems eaten 

 *wy by insects. On the other sheet is one very poor specimen, 

 which may be B. edulis, and a fine plant that is certainly B 

 omatipes. In a letter to Professor Peck, dated Nov. 27, 1874, 



rost says : « Have you Curtis' full description of Boletus rctipes ? 



rom all I can gather it seems to me that the specimen I sent you 

 a such is the true one. What you describe as such I suspect is 

 ^variety of B. edulis. it indeed does it exactly. If Bulliard's fig- 

 ure is the true species, then Sowerby's must be a variety, for they 

 £ very m uc h unlike in appearance but microscopically they are 



" Same s P ec »es. What you describe is abundant here. Unless 



the 

 I 



greatly mistake, it is another variety of Boletus edulis. I am 

 amillar ^th all three of them." 



Boletus ft ^ * „,, c _t . . _ 



: us elegans Schum. 



S name is doubtfully assigned by Frost to a specimen from 

 Jgue and to one collected by himself, neither of which is very 



preserved. The former is B. luteus and the latter is possibly 

 D - Kavenelii. 



Boletus 



FELLEUS Bull. 



ne sr »eet contains a single large plant cut in half. It is well 



Preserved tu 1 . 



a other sheet contains five plants, four of them 



»l • , ^ ornatipes, and a single one, in the lower corner on 

 * e r, ght, B. felleus. 



Th^ FERRUGIN£ us Frost. 



e is one sheet under this name containing five excellent 

 A f 11 S ecte d in 1 867 under oak trees near borders of woods. 

 disti escn P tlo n is written at the bottom of the sheet. I cannot 



(list 



-6^'sn trie species 



L * Tu s fir Mus Frost 



felleus. (Pla 



tjjj P°° r plants represent this species, which is probably not 



rom B. luridus Schaeff. In B. luridus the stem is usually 



