SPECIES OF VISCID BOLETI. 59 
7 Pileus yellow. 8. 
7 Pileus not clear yellow. B. granulatus. 
8 Stem rhubarb color. B. punctipes. 
8 Stem yellow, 4 lines or more thick. B. subaureus. 
8 Stem generally yellow, less than 4 lines thick. B. Americanus. 
9 Pileus bay-brown or chestnut color. 10. 
9 Pileus some other color. B. piperatus. 
10 Pileus very glutinous, stem very short. B. brevipes. 
10 Pileus merely viscid when moist, stem longer. B. badius. 
Boletus Ravenelii 5. & C. 
Ravyenel’s Boletus. 
Pileus convex or nearly plane, slightly viscid when young or moist, 
at first covered with a sulphur-yellow pulverulent tomentum, the disk 
at length naked, dull-red, flesh whitish, sometimes with yellowish 
strains; tubes at first plane, adnate, pale-yellow, at length yellowish- 
brown or umber, sometimes becoming convex and slightly depressed 
around the stem, dingy-greenish when bruised, medium size, subro- 
tund ; stem nearly equal, clothed and colored like the young pileus, 
yellow within, with a slight somewhat evanescent tomentose annulus ; 
spores ochraceous-brown, .0004 to .0005 in. long, .0002 to .00025 
broad. 
Plant solitary, rarely cespitose, pileus 1 to 3 in. broad, stem 1.5 to 
4 in. long, 3 to 6 lines thick. 
Woods and copses. Rensselaer, Saratoga and Fulton counties. 
This is a very distinct and beautiful species. Mr. Ravenel remarks 
in his notes that ‘‘ this plant is not infested by larvee, and preserves 
more constant characters than any other Boletus with which I am 
acquainted.” The webby powdered filaments constitute a universal 
veil, which at first covers the whole plant and conceals the young 
tubes. As the pileus expands, the veil generally disappears from the 
disk and ruptures between the margin and the stem, a part adhering 
to each. In consequence of the peculiar veil and the slight viscidity 
of the pileus the species does not harmonize well with the associated 
species, and but for the slight annulus it might as well be placed near 
BL. piperatus. The annulus is sometimes stained by the spores. 
These, when caught on white paper, at first appear to have a slight 
greenish tint. 
Boletus. spectabilis Ph. 
Showy Boletus. 
Pileus broadly convex, at first covered with a red tomentum, then 
squamose, viscid when moist, red, the tomentose scales becoming 
grayish-red, brownish or yellowish, flesh whitish or pale-yellow ; tubes 
