Murrill: Illustrations of Fungi 
117 
the squamulose character often seen in large, old plants rather 
than the more usual appressed-fibrillose character of the surface. 
While the two specific names above cited refer to the same thing 
historically, they have been used in this country to distinguish the 
squamulose specimens of this group from the fibrillose or velvety 
ones. There is no doubt that we have in America some varieties 
or species not represented in Europe, all with the peculiar, opaque, 
tuberculose, lemon-shaped spores. Peck’s key to these is given 
here for the convenience of collectors. The different generic 
names that have been assigned to this group need not be discussed 
at present. 
Peck’s Key to Hypholoma § Velutina 
Pileus persistently hairy-sqamulose or fibrillose. 
Hymenophore cespitose ; spores 8-io X 5-6 ix. 
Hyraenophore gregarious; spores 10-12 X 6-8 
Pileus partly or wholly glabrous. 
Pileus smooth, the cuticle often rimose. 
Pileus rugose or radiately wrinkled. 
Pileus tawny ; spores rough. 
Pileus brown ; spores smooth. 
Mycena pura (Pers.) Quel. 
Pure Mycena 
Plate 158. Figure 3- X i 
Pileus fleshy, thin, campanulate or convex to expanded, ob- 
tusely umbonate when young, 2-5 cm. broad; surface smooth, 
glabrous, of uniform color, varying from rose to rose-purple, 
violet, or lilac, margin striate, upturned with age ; lamellae rather 
broad, adnate to sinuate, sometimes wavy and crenate on the 
edges, venose-connected, varying from white to shades of rose 
or violet, sometimes white on the edges ; spores oblong, hyaline, 
6-8 X 3-3.5 A*' ; stipe firm, smooth subglabrous, concolorous, hol- 
low, somewhat villose at the base, 5-8 cm. long, 2-4 mm. thick. 
This beautiful little species is common on the ground in woods 
throughout temperate North America and Europe. It varies 
considerably in shape, sometimes being small and bell-shaped 
with a long stipe and at other times being quite broad and from 
convex to plane with a short stipe. An old Erench chart includes 
1. H. lacrymabundum. 
2. H. rigidipes. 
3. H. Boughtoni. 
4. H. rugocephahcm. 
5. H. delineatum. 
