Lichenes of New Englond. 291 
sparingly, on the summits of the Chin of Mansfield, 
and the Camel’s Rump, the two highest of the Green 
Mountains, in Vermont. A. Van Diemen’s Land 
lichen, from the herbarium of Professor Torrey, 
seems also to belong to this species. Should our 
plant prove to be. distinct, it may be called P. platy- 
carpa. 
P. colpodes, Ach. Meth., Muhl. l.c., Hals. 1. c., 
Spreng. l. c., Mass. Catal. — Trees, Essex Co., 
Oakes!, Plainfield, Porter!. Also Plymouth ; a some- 
what rare spedigs. | 
pien crocata, Ach., Hals. 1. c., Port. 1. c. sap 
rocks and trees. Massachusetts, Hals., X eg 
Port. ! I. c., Plainfield, Port.! in herb. . nostra. 
Waltham and Manchester. Also in the No b " 
White Mountains, and on wood from Maine. ' Ken- 
nebunk, Me., Mr. Russell!.. The station given by 
Halsey was foünded, on specimens from Dr. Porter. 
"This lichen may prove.to be a more common species 
in this country, than has been supposed. I have 
generally met with it on shaded rocks in old woods, 
and but once on trees; though Dr. Porter's speci- 
mens are from the latter. The color varies from a 
light lead-gray on the upper surface, and a very light 
brown beneath, (the young plant,) to “a very dark 
olive-green,” as Hooker describes it, above, and a. 
rufous-brown benéath. Mr. Russell’s plant is rather 
* slauco-fuscous,” as Acharius describes the species. 
The Waltham plant and that from the White Moun- 
tains are of a dark reddish-brown. 
S. aurata, Ach. Meth., Port.!.in Eat. Man. Bot., 
