r E j ; 
Lichenés of New England. — — 959 
without a careful comparison of the plant from this re- 
gion, and that from Dr. Porter, with Scherer’s original 
Swiss specimens. . Between these and our plant, there 
appears no other difference but color, which in the 
Swiss specimens is bright greenish-yellow, and in ours 
dark green. "That this difference is not important, will 
appear from Acharius, (Meth. p. 267—8,) who charac- 
terizes the species as “ virescenti-citrino" in his specific 
description, and in the note says “ color apud nos fulvus, 
virescenti-citrinus, rarius flavescens;" and mentions 
further, that he had specimens from Swartz * colore 
vivide citrino.” 
Avecroria jubata, Ach. 8, chalybeifórmis, Ach. 
Syn. (cit. Seher.), Scher.!, Hook., A. chalybeiformis, 
Muhl., Parmélia jubata, £, chalybeifónnis, Ach. Meth., 
Lili chalybeiformis, L. Cambridge, &c. on old rails. 
This appears to be the common form of Alectória on the 
coast. It is distinguished by its rigid and sub-erect 
. more or less black thallus, the branches of which are 
commonly beset with white soredia, which Acharius 
says are rarely found on the true A. jubàta. This last 
I have only seen in old woods in the interior ; as on 
the sides of the White Mountains, where it occurs in 
great luxuriance. — 
Coryicunarta. I gathered specimens of two alpine 
Corniculariz on the lower summits of the White Moun- 
tains, resembling considerably two alpine forms of Eu- 
rope, which they may prove to be; but the specimens 
are not sufficient to allow me to propose them. 
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