=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 prælonga_, 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 is nearly of a uniform color, and the color varies from rose, to rose purple, violet, or lilac. Plants from the Blue Ridge mountains of North Carolina were chiefly rose purple, very young plants of a much deeper color (auricula purple of Ridgeway), while those collected at Ithaca were violet. The plants vary from 5--8 cm. high, the cap 2--3 cm. broad, and the stem 2--4 mm. stout. The plants are scattered or somewhat clustered, sometimes occurring singly, and again many covering a small area of ground.