llel lines from the sides of
the mass. The spines are from 1--2 cm. or more long. Figure 197
represents one of the plants, showing the long spines.

=Hydnum repandum= L. =Edible.=--This plant is not uncommon, and it is
widely distributed. It grows usually in woods, on the ground. It varies
greatly in size, from very small specimens, 1--2 cm. high to others
10--12 cm. high. The cap is 2--18 cm. broad, and the stem 6--12 mm. in
thickness.

[Illustration: PLATE 78, FIGURE 198.--Hydnum repandum. Cap whitish or
yellowish, or pale yellowish brown; spines whitish or yellowish (natural
size, often smaller). Copyright.]

It is entirely white or the cap varies to buff, dull yellow reddish or
dull brown. It is very brittle, and must be handled with the utmost care
if one wishes to preserve the specimen intact. The pileus is more or
less irregular, the stem being generally eccentric, so that the pileus
is produced more on one side than on the other, sometimes entirely
lateral at the end of the stem. The margin is more or less wavy or
repand. The spines are white, straight, and very brittle. The stem is
even or clavate. Figure 198 is from plants collected at Ithaca during
August, 1899, and represents one of the large specimens of the species.
In one plant the pileus is entirely lateral on the end of the long
clavate stem, and is somewhat reniform, the stem being attached at the
sinus. In the other plant the stem is attached near the center. This
species is considered one of the best mushrooms for the table.

[Illustration: PLATE 79, FIGURE 199.--Hydnum putidum. Caps whitish then
buff, then brownish or nearly black in older parts, edge white (natural
size). Copyright.]

=Hydnum imbricatum= L. =Edible.=--This is a very variable species both
in size and in the surface characters of the pileus. It occurs in woods,
groves, or in open places under trees. The plants are 3--7 cm. high, and
the pileus varies from 5--15 cm. broad, the stem from .5--2.5 cm. in
thickness. The pileus is convex and nearly expanded, fleshy, thinner at
the margin, regular or very irregular. The color is grayish in the
younger and smaller plants to umber or quite dark in the larger and
older ones. The surface is cracked and torn into triangular scales,
showing the whitish color of the flesh between the scales. The scales
are small in the younger plants and larger in the older ones. Figure 200
is from plants collected at Ithaca, and the pileus in these specimens