The stem is nearly equal, firm, even, paler than the pileus. The spores are ochraceous-brown, 10–12×4–5µ. Peck.
The plant represented in Figure 307 grew under the beech trees on Cemetery Hill. I found it frequently in the woods, from July to September.
Boletus Frostii. Russell.
Figure 308.—Boletus Frostii. Caps blood-red and shining. Natural size.
Frostii is named in honor of Mr. Frost, a noted mycologist.
The pileus is three to four inches broad; convex, polished, shining, blood-red; the margin is thin, the flesh scarcely changing to blue.
The tubes are nearly free, greenish-yellow, becoming yellowish-brown with age, their mouths blood-red or cinnabar-red.
The stem is two to four inches long, three to six lines thick, equal or tapering upward, distinctly reticulated, firm, blood-red. The spores are 12.5–15×5µ. Peck, Boleti of U. S.