curved at the base. _Peck._

I have found this species frequently in the woods and open places about
Chillicothe. It is one of the easiest of the Boleti to determine. The
plants here have a bright brownish-red pileus, with a shade lighter
color on the stem; the latter quite rough and tapering toward the cap.
They are usually solitary. The plants in Figure 306 were collected in
Michigan and photographed by Dr. Fischer.

_Boletus vermiculosus. Pk._

[Illustration: Figure 307.--Boletus vermiculosus. One-half natural
size.]

Vermiculosus means full of small worms. The pileus is broadly convex,
thick, firm, dry; smooth, or very minutely tomentose; brown,
yellowish-brown or grayish-brown, sometimes tinged with red. The flesh
is white or whitish, quickly changing to blue where wounded. The tubes
are plane or slightly convex, nearly free, yellow; their mouths small,
round, brownish-orange, becoming darker or blackish with age, changing
promptly to blue where wounded.

The stem is nearly equal, firm, even, paler than the pileus. The spores
are ochraceous-brown, 10-12x4-5u. _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._

[Illustration: 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
12.5-15x5u. _Peck_, Boleti of U. S.

This is a beautiful plant. It is not plentiful, yet it is found
frequently on some of our hillsides. The plants in Figure 308 were found
in Hayne's Hollow near Chillicothe, and photographed by Dr. Kellerman.
The plant is found in New England and through the Middle West. I have
had beautiful plants sent me from Vermont. It is not edible, so far as I
know. Found in August and September.

_Boletus luridus. Schaeff._

THE LURID BOLETUS.

[Illustration: Figure 309.--Boletus luridus. One-half natural size.]

Luridus means pale-yellow, sallow. The pileus is convex, tomentose,
brown-