290 Lichenes of New England. 
Nestl.! l. c., Hook. l. c., Imbricaria diatrypa, De 
Cand. l. ¢., Lobaria terebrata, Hoffm. (cit. Cand.), 
Lichen pertusus, Schrad. (cit. Ach:), L. diatrypus, 
Ach. Prodr. — Rocks, in the Notch. of, the White 
Mountains. , Presents every character of the Euro- 
pean plant. Specimens in frnit did not occur. The 
feature from which this species has derived its vari- 
ous names, diatrypus, terebratus, pertusus;is an un- 
common and remarkable one.. 'l'hese words intimate 
not merely that the margins of the thallus are eri- 
brose, irregularly perforated, as in Gyrophora erosa; 
but that every where, “passim,” the thallus is marked 
with regular holes, “Jaciniis parvis foraminibus: per- 
tasis.” (Ach. Meg a 251.). This — is new 
to our Flora. 
Belonging to the same. group of Parmelize v which 
includes P. diatrypa, and the species allied to it, is à 
lichen, which, for want of specimens to compare 
with, I am still unable to determine, though 1 have 
had it several years in my collection: t presents 
several very striking characters and is probably al- 
ready described. The long, lax, linear lobes of the . 
thallus, which are white above, and black, ragged, 
_.and spongy beneath, and inflated at the apices, to- 
gether with the large scutelle, at first goblet-shaped, 
and becoming, when mature, very ample, will serve / 
to point out the plant to other observers. I have 
thought it agreed generally with such brief descrip- - 
tions as I have seen of a remarkable species from our 
Northwest Coast, — P. enteromorpha. 'The species 
occurs abundantly on the White Mountains, in the 
subalpine regions. T have also ‘observed it, more 
