The cap is generally 2–4 in. broad, the stem 1.5–3 in. long, 4–8 lines thick. The plants are found in thin woods or in bushy places in July and August.
Var. maculo´sus Pk. differs from the type simply in having a few yellowish spots scattered over the cap.
While not as high flavored as some Boleti this is, nevertheless, a fairly good and perfectly safe one. Peck, 49th Rep. N.Y. State Bot.
Very open timber in Woodlands Cemetery, Philadelphia. August, 1898. McIlvaine.
A solitary species which does not appear to be plentiful. The whole fungus is edible, but the stems and tubes are of different texture from the caps and do not cook well with them.
B. æstiva´lis Fr.—pertaining to summer. Pileus convex or nearly plane, even, glabrous, whitish, granulose in dry weather. Flesh yellow below, white above. Tubes nearly free, the mouths minute, equal, yellow. Stem very thick, bulbous, even, glabrous, pale yellow, reddish within at the base. Spores elongated-oval, greenish-brown, rather dark, 11×4–5µ.
Pileus 4–6 in. broad. Stem 4–5 in. long.
Woods and woodland pastures. Minnesota, Johnson; California, H. and M.
A large species, recorded as edible and said to be pleasant and delicate in flavor. I have seen no specimens of this. Peck, Boleti of the United States.
West Virginia mountains, 1882, Haddonfield, N.J., 1894, McIlvaine, on grassy margin of woods.