etimes umbonate, striate to
near the center, and in color some shade of brown or gray, but variable.
The =gills= are decurrent by a tooth, not crowded, connected by veins
over the interspaces, white or flesh colored. The slender =stems= are
firm, hollow, and hairy at the base.

[Illustration: FIGURE 96.--Mycena polygramma, long-stemmed form growing
on ground (= M. praelonga Pk.). Cap dark brown with a leaden tint,
striate on margin; stem finely and beautifully longitudinally striate
(natural size). Copyright.]

=Mycena polygramma= Bull.--This plant is very closely related to _M.
galericulata_, and has the same habit. It might be easily mistaken for
it. It is easily distinguished by its peculiar bright, shining,
longitudinally striate to sulcate stem. It usually grows on wood, but
does occur on the ground, when it often has a very long stem. In this
condition it was described by Peck in the 23rd Report, N. Y. State Mus.,
p. 81, as _Mycena praelonga_, from plants collected in a sphagnum moor
during the month of June. This form was also collected at Ithaca several
times during late autumn in a woods near Ithaca, in 1898. The plants are
from 12--20 cm. high, the cap 1--2 cm. broad, and the stem 2--3 mm. in
thickness.

The =pileus= is first nearly cylindrical, then conic, becoming
bell-shaped and finally nearly expanded, when it is umbonate. It is
smooth, striate on the margin, of a dark brown color with a leaden tint.
The =gills= are narrow, white, adnate and slightly decurrent on the stem
by a tooth. The very long =stem= is smooth, but marked with parallel
grooves too fine to show in the photograph, firm, hollow, somewhat paler
than the pileus, usually tinged with red, and hairy at the base. Figure
96 is from plants (No. 3113 C. U. herbarium), collected in a woods near
Ithaca in damp places among leaves. A number of the specimens collected
were attacked by a parasitic mucor of the genus _Spinellus_. Two
species, _S. fusiger_ (Link.) van Tiegh., and _S. macrocarpus_ (Corda)
Karst., were found, sometimes both on the same plant. The long-stalked
sporangia bristle in all directions from the cap.

[Illustration: FIGURE 97.--Mycena pura. Entire plant rose, rose purple,
violet, or lilac. Striate on margin of pileus (natural size, often much
larger).]

=Mycena pura= Pers.--This plant is quite common and very widely
distributed, and occurs in woods and grassy open places, during late
summer and in the autumn. The entire plant