w; 
* 
* 
White Mountains. The thallus is of a rusty red, 
and is copiously besprinkled with the small black 
apothecia., The red color is probably o€casioned by 
oxide of iron in the rock. The plant does not ap- 
pear to differ in other characters of importance from 
U.:cinerea. "Thallus distinctly areolated, but at the 
same time continuous and regular. ý 
_U. cinerea, Ach., — forma varians polygonia. Aja 
pine rocks, White Mountains, with the last. Thallus 
rusty red, often of a fine dark red, owing, as in the 
last, to the presence of iron in the rock.- The thal- 
lus is made up of areole, which are much 1 than 
in the la$t, distinct, or aggregated, or someti con- 
fluent. The apothecia minute, very irregulat, often 
several in a single: areola. This appears to differ 
considerably from the last, and both from our com- 
mon U. cinerea; but the charaeters of — 
in the plants from the White Mountains are so nearly 
represented in European: specimens, arranged as vari- 
eties of the above-cited species, that I can hardly 
consider our plants distinct, even as varieties. The 
most striking feature of these forms is, perhaps, their 
color; in regard. to which, besides what has been 
said above, we may call to mind Linnzus's pleasant 
application of the poet, **Nimium ne crede colori ; ” à. 
a of allowed ERN in — 
uin. muscorum; "Bahs: tke c, Hook. l| e., 
Muhl. l. ci, Patellaria muscorum, De Cand. l. c., P. 
sabuletorum, Spreng. l. c., Lecidea sabuletorum, 
Ach., Torr. l ¢., Hals. l. c;, Lichen sabuletorum, 
Flórke, L. muscorum, L. — Decayed mosses, Cam- 
| of New England. e. " 
