WHITE-SPORED AGARICS. 



95 



for it. It is easily distinguished by its peculiar bright, shining, longi- 

 tudinally 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 prcelonga, from plants collected in a 

 sphagnum moor during the month of June. This form was also col- 

 lected 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. 31 13 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. 



Mycena pura Pers. This plant is quite common and very widely 

 distributed, and oc- 

 curs 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 



Figure 97. Mycena pura. Entire plant rose, rose-purple, 

 violet, or lilac. Striate on margin of pileus (natural 

 size, often much larger). 



