106 BULLETIN OF THE NEW YORK STATE MUSEUM 
color is wanting in the marginal tube mouths and the stem 
is marked with fine subreticulating elevated lines. In other 
respects it agrees well with the diagnosis of the species. I 
am informed by Professor Farlow that according to an 
authentic specimen in the Curtis Herbarium, Boletus lete- 
color B. & C.-of Curtis Catalogue is the same as this species. 
SUBPRUINOSI 
Pileus glabrous, but more often pruinose. ‘Tubes adnate, 
yellowish. Stem equal, even, neither bulbous nor reticu- 
lated. 
The species of this tribe have the pileus neither viscid 
nor distinctly and permanently tomentose. Typically it 
is glabrous or merely pruinose, but Fries has admitted into 
the group one species with a pulverulent, and one with 
a silky pileus. The species are not sharply distinguished 
from those of the following tribes and possibly some have 
been admitted here which might as well have been placed 
there. Some of the species are variable in color and their 
characters are not sufficiently well known. 
Tubes bright-yellow, golden or subochraceous. I 
Mubes palevon whitish-yellow, pe ssee cere eee 6 
1. Tubes changing to blue where wounded........... 2 
lig, WOES incre Claenaeanner WO) lollblaecdegse dacb acoso 4boc 3 
2. Stem pallid, with a circumscribing red line at 
1) 01S XO) OR bee Cie Pas mn ori i ela oe aA ac B. glabellus, 
2. Stem yellow, sometimes with red stains....... B. miniato-olivaceus. 
As S\iSran SG, WOMIONY BNe WES WOO) 255666 aceceocoose B. bicolor. 
3. Stem) viscid on Slutinous when Mmolstes 14 oe B. auriporus. 
3, “Stem NOt WilS Ci Gey cei ee Shee lean ce ee 4 
A) Elanit crowines on SClerodermas. same e B. parasiticus. 
A. Plantatennestilalcne eee marveuser ics eee eerie 5 
beaches oneentshoyelll ow: einer weyers oe a B. alutaceus. 
5. Tubes golden-yellow. ... .. B. tenuiculus. 
6. Pileus reticulated with selbeateaneons inowe 
Neate rs ye me reais a OM othr oaabh te. B. dictyocephalus. 
om Pileusimotaneticulated pee eine nr err 7 
7. Tubes changing to blue where wounded........... B. pallidus. 
