Mukkill: The Boleti of the Fkost hekuarium 521 



color of the tubes of /'. aiiriporus still well preserved. The speci- 

 mens united at the base suggest another synonym, />'. caespitosus 

 Peck, in which the subcespitose character and the subcuticular 

 reddish tint were emphasized. (Plate n .^ 



Boletus limatulus P^rost. 



This species, reported rare by Frost, was collected in hilly 

 woods in July, 1869. One sheet contains five fair plants, with 

 full description, and another three plants well preserved. They 

 may all be referred to />. cdulis. 



Boletus luteus L. 



None of the specimens are good, most of them being moulded. 

 There are three sheets containing fourteen plants, one of the sheets 

 having " B. flavidus " written on it in pencil. 

 Boletus magnisporus Frost. 



Represented by three sheets containing six poor specimens 

 collected in woods and thickets. The species is not distinct from 

 B. luridus. The spores are oblong-elliptical, decidedly ferruginous- 

 fulvous, 12-16// X 4-5 fi. Frost makes them 16.5 ft x 6/i. The 

 color of the spores is probably greenish in fresh specimens. 



Boletus miniato-oi.ivaceus Frost. 



Represented by two sheets containing five excellent specimens 

 collected in woods and borders. 



Boletus ornatipes Peck. 



Represented by two sheets containing ten good plants. See 

 remarks under B. edulis, B.feHeus, and B. rctipes. 



Boletus pallidus Frost. 



Represented by three sheets, containing three excellent speci- 

 mens and six more or less moulded ones. On one sheet is a full 

 description. (Plate 38.) 

 Boletus Peckii Frost. 



This species, published by Peck in the 29th Report, does not 

 appear in the collection. 

 Boletus pictus Peck. 



See Boletus Murraii, in the list of unpublished species. 



Boletus piperatus Bull. 



The collection contains two sheets of this species, one with 

 five poor plants and one with four good ones. The habitat is 

 given as " woods and grass grounds." 



