| Fig. | Page. | Fig. | Page. | |
| 1–2. | Boletus bicolor, | [425] | 4. Boletus pallidus, | 429 |
| 3. | Boletus rubropunctus, | [429] |
B. bi´color Pk.—two-color. (Plate [CXVII], figs. 1, 2, p. 424.) Pileus convex, glabrous or merely pruinose-tomentose, dark-red, firm, becoming soft, paler and sometimes spotted or stained with yellow when old. Flesh yellow, not at all or but slightly and slowly changing to blue where wounded. Tubes nearly plane, adnate, bright-yellow, becoming ochraceous, slowly changing to blue where wounded, their mouths small, angular or subrotund. Stem subequal, firm, solid, red, generally yellow at the top. Spores pale, ochraceous-brown, 10–12.5×4–5µ.
Pileus 2–4 in. broad. Stem 1–3 in. long, 4–6 lines thick.
Woods and open places. New York, Peck; Wisconsin, Bundy.
The color of this plant is somewhat variable. In the typical form the pileus and stem are dark red, approaching Indian red, but when old the color of the pileus fades and is often intermingled with yellow. The surface sometimes cracks and becomes cracked in areas. From the European B. Barlæ this species is separated by its solid stem; from B. versicolor by its small tube mouths and its red stem. Peck, Boleti of the U.S.
Plentiful at Mt. Gretna, Pa., July, August, September, 1898, in mixed woods. Very variable in shape and color. Identified by Professor Peck from painting and description.
Fine eating, one of the very best.
B. glabel´lus Pk.—smooth. Pileus fleshy, thick, broadly convex or nearly plane, soft, dry, subglabrous, smoky-buff. Flesh white, both it and the tubes changing to blue where wounded. Tubes nearly plane, adnate, ochraceous, tinged with green, their mouths small, subrotund. Stem subequal, glabrous, even, reddish toward the base, pallid above, with a narrow reddish circumscribing zone or line at the top. Spores oblong, brownish-ochraceous, tinged with green when fresh, 10–12.5×4µ.
Pileus 3–5 in. broad. Stem 1–3 in. long, 5–10 lines thick.
Grassy ground under oaks. New York, Peck.