Lichenes of New England. 299 
rius, as having a “ sanguineo-fuscous” base. His va- 
riety £: nipharga is said to have a purplish-violet base. 
Our plant is variable in size, and habit of growth, and 
also in the intensity of the colors. A tall form is 
common, of a light-green above, and with a base more 
or less sanguineo-fuscous, passing into violet. Anoth- 
er form is smaller, very cespitose, and quite green, 
with a dark violet, almost black, base. ' Both of these 
occurred in fructifieation. I found this species also 
on the .summits. of the Chin oí Mansfield, and the 
Camel's Rump, Vt. 
C. nivalis, Ach., E. T. Enum: l. c. "istam on 
the alpine summit of the Chin of Mansfield, but. not 
elsewhere in the- Vermont Mountains. © - 
C. juniperina, Ach. g- pinastri, Ach. I found this 
at the White Mountains on the small branches of 
dwarf firs, upon which it is said to grow in Britain ; 
but the plant occurred very luxuriantly on rocks, 
just below the summit of the Nose of Mansfield, and 
also on the Camel's Rump, Vt. 
Growing on the small branches of trees, a  Jittle 
below the subalpine region of the White Mountains, 
I have frequently gathered a Cetraria allied to the 
last, but of a very different aspect. This also oc- 
eurred in similar places on the Chin of Mansfield, 
and the other highest peaks of the Green Mountains, 
in Vt. It may be described as follows ; — thallo sub- : 
coriaceo. expanso glabro virescenti, subtus dilute 
eastaneo, margine ascendente crispo. Pelte not seen. 
Should it prove to be new, which I somewhat doubt, 
it may be called C. virescens. | 
C. glauca, Ach. Meth., Scher. ! is €j Hook: 1. c., 
