Don 
Lichenes of New England. 295 
tus, L. part. — Rocks; in the Notch of the White 
Mountains. . A smoother variety occurred in the Alpine 
regions of the Chin of Mansfield, Vt. In the place 
above-cited, I expressed a doubt whether the plants 
there called “G. deusta, Mass. Catal." (Acharius was 
not referred to,) were not rather a form of some other 
species. The name in question was communicated to 
me, with specimens, by a botanical friend ; but I do. 
not know that it is the G. deusta of the Mass. Catal. 
The plants, I am satisfied, belong to G. Muhlenbergii, 
and are far from the true G. deusta, above noticed. 
G. erosa, Ach, E. T. Enum, lc. Given in the 
cited Enumeration with a mark of doubt. I suc- 
ceeded ‘the last year in obtaining good specimens. 
The species. occurs; less commonly than some others, 
on rocks in the alpine regions of the White Moun- 
tains, and is undistinguishable in d respect from 
the foreign plant. < 
'G. proboscidea; Ach. = Alpine rocks on the Chin 
of Mansfield, Vt. ‘This is the highest summit in 
Vermont, and I did not find the species on any other 
of the Vermont mountains. ‘It varies somewhat, as 
at the White Mountains. The var. f. arctica did not 
occur. 
G. Muhlenbergii Ach. eh 4j Muhl. l. c., Hals. 
L c, Hook. in Frankl. Voy. cum Ic, Lecidea’ Muhl- 
enka; Spreng. l: co; & G. deusta, Port.! in herb. 
' nostr; and E. 'T. Enum. l. c., not of Ach. — Rocks; 
Blue Hills, Milton, very abundant and fine. iil 
Co. Oakes.! Also Cambridge, Medford, Manchester, 
Plainfield, Plymouth, White pene in the 
Notch, and Grand Monadnock, N ;H.. There is 
r 
