ey
are elliptical usually, with rounded ends, 12--15 x 4--5 mu. The =stem=
is white when young, with a tinge of yellow ochre, and pale flesh color
below. It is marked with somewhat parallel elevated lines, or rugae
below, where it is enlarged and nearly bulbous. In age it becomes flesh
color the entire length and is more plainly striate rugose with a
yellowish tinge at the base. The stem tapers gradually and strongly from
the base to the apex, so that it often appears long conic.

The plant is often badly eaten by snails, so that it is sometimes
difficult to obtain perfect specimens. Figure 170 is from a photograph
of plants (No. 4092 C. U. herbarium) from Blowing Rock, N. C.

=Boletus americanus= Pk.--This species occurs in woods and open places,
growing on the ground in wet weather. It occurs singly or clustered,
sometimes two or three joined by their bases, but usually more
scattered. It is usually found under or near pine trees. The plant is
3--6 cm. high, the cap 2--7 cm. broad, and the stem is 4--8 mm. in
thickness. It is very slimy in wet weather, the cap is yellow, streaked
or spotted with faint red, and the stem is covered with numerous brown
or reddish brown dots.

The =pileus= is rounded, then convex, becoming nearly expanded and
sometimes with an umbo. It is soft, very slimy or viscid when moist,
yellow. When young the surface gluten is often mixed with loose threads,
more abundant on the margin, and continuous with the veil, which can
only be seen in the very young stage. As the pileus expands the margin
is sometimes scaly from remnants of the veil and of loose hairs on the
surface. The cap loses its bright color as it ages, and is then
sometimes streaked or spotted with red. The =tube= surface is nearly
plane, and the tubes join squarely against the stem. The tubes are
rather large, angular, yellowish, becoming dull ochraceous. The =stem=
is nearly equal, yellow, and covered with numerous brownish or reddish
brown glandular dots. No ring is present.

This species grows in the same situations as the _B. granulatus_,
sometimes both species are common over the same area. Figure 171 is from
plants (No. 3991 C. U. herbarium) collected at Blowing Rock, N. C.,
September, 1899. The species is closely related to _B. flavidus_ Fr.,
and according to some it is identical with it.

=Boletus granulatus= L. =Edible.=--This species is one of the very
common and widely distributed ones. It grows in woods and open pla