Its locality is thus far limited to the Adirondack region of this state. Peck, Boleti of the U.S.
B. sero´tinus Frost.—late. Bulletin Buffalo Soc. Nat. Sci., 1874. Pileus flat or convex, viscid, sordid brown, streaked with the remnants of the veil, especially near the margin, which is white, very thin, and when partly grown singularly pendent. Flesh white, changing to bluish. Tubes large, angular, unequal, slightly decurrent, at first sordid white or gray, sometimes tinged with green near the stem, afterward cinnamon-yellow. Stem reticulated above the ring which adheres partly to it and partly to the margin of the pileus, white but stained by the brownish spores and tinged with yellow at maturity. Spores 10×6µ.
Shaded grassy ground. New England, Frost.
Probably this is only a variety of the preceding species. Peck, Boleti of the U.S.
B. salmoni´color Frost. Bull. Buff. Soc. Nat. Sci., 1874. Pileus convex, soft, very glutinous, brownish or tawny-white with a faint tinge of red, wine-color when dry, the margin thin. Flesh tinged with red. Tubes simple, even, angular, adnate, pale salmon color. Stem small, dotted above with bright ferruginous red, sordid below, annulus dingy salmon-color. Spores 8×2.5µ.
Borders of pine woods. New England. Frost.
Apparently a distinct species. No specimens seen. Peck, Boleti of the U.S.
B. el´egans Schum. Pileus convex or plane, viscose, golden-yellow or somewhat rust-color. Flesh pale-yellow. Tubes decurrent, golden or sulphur-yellow, the mouths minute, simple. Stem unequal, firm, golden or reddish, dotted above the fugacious white or pale-yellowish annulus.
Pileus 3–4.5 in. broad. Stem 2–4 in. long.
Woods, especially under or near larch trees. North Carolina, Curtis; Wisconsin, Bundy; Minnesota, Johnson. Peck, Boleti of the U.S.