They grow in lines for some distance, the caps so close
together that they are very frequently confluent. I found the plant at
Salem, and in several other localities in the state, although I have
never seen a description of it. Any one will be able to recognize it
from Figure 371. It grows in the woods in August and September.

_Hydnum Blackfordae. Pk._

The pileus is fleshy, convex, glabrous, grayish or greenish-gray, flesh
whitish with reddish stains, slowly becoming darker on exposure; aculei
subulate, 2-5 mm. long, yellowish-gray, becoming brown with age or
drying; stem equal or stuffed, becoming hollow in drying; glabrous,
colored like the pileus; spores brown, globose, verrucose, 8-10u broad.

The pileus is 2.5-6 cm. broad; stem 2.5-4 cm. long, 3-4 mm. thick.

Mossy ground in low springy places in damp mixed woods. August. _Peck._

This species was found at Ellis, Mass., and was sent to me through
courtesy of the collector, Mrs. E. B. Blackford, Boston, for whom it was
named.

_Hydnum fennicum. Karst._

[Illustration: Figure 372.--Hydnum fennicum. Natural size, showing the
teeth.]

[Illustration: Figure 373.--Hydnum fennicum. Natural size, showing the
scaly cap.]

Pileus fleshy, fragile, unequal; at first scaly, at length breaking up;
reddish-brick color becoming darker; margin undulately lobed, two to
four inches broad. Flesh white.

The teeth decurrent, equal, pointed, from white to dusky, about 4 mm.
long.

The stem is sufficiently stout, unequal below, attenuated, flexuous or
curved, smooth, of the same color as the cap, base acute, white tomentum
outside, inside light pale-blue, or dark-gray.

The spores are ellipso-spheroidical or subspheroidical, rough, dusky,
4-6u long, 3-5u broad.

The plants in Figures 372 and 373 were found in Haynes' Hollow.

The plant is quite bitter and no amount of cooking will make it edible.

Found in woods from August to September.

_Hydnum adustum. Fr._

[Illustration: Figure 374.--Hydnum adustum. Natural size.]

Adustum means scorched, burned. The pileus is two to three inches broad,
yellowish-white, blackish around the margin, coriaceous, slightly zoned;
plane at first, then slightly depressed; tomentose, thin; frequently a
plant will be found growing on the top of another plant. The spines are
at first white, adnate, short, turning flesh-color and when dried almost
black.

The stem is short, solid, tapering upward.

The plant is found growing