184 Miscellanies. 
Cornicularia lanata, Ach., is met with; this plant does not appear to 
have been observed by any American botanist. Its co-species, C. pu- 
bescens, Ach., is to be seen on the same exposures, a fact at variance 
with the testimony of Acharius and other botanists. 
Urceolaria scruposa, considered rare, is an inhabitant of the rocks, 
and is a curious and well defined lichen. 
Of the doubtful genus Lepraria, two species have been detected, 
viz. L. chlorina, on stone-walls, and L. latebrarum, of Halsey, on 
bowlders, and a third doubtful one, supposed to be the L. virescens.. 
The large rocks afford the Endocarpum miniatum, and E. smarag- 
dalum, while the curious E. Weberi is abundant in the brooks. | Va- 
_riolaria amara, Halsey and Ach., is abundant, its intense bitterness re- 
sembling quinine. This has been supposed identical with V. faginea; 
but they are probably two different species, only to be distinguished by 
minute characters. Of the Cetrariz, there are three of the four men- 
tioned in Hitchcock’s catalogue, viz. C. lacunosa, C. ciliaris, and C. 
viridis. An interesting small Nephroma is somewhat abundant on 
the faces of small sunken stones, in sunny exposures, which Mr. 
Tuckerman supposes to be N. Helvetica, and identical with the plants 
found by him in Newton. This also adds another new species to 
ee © PEE hedese species of Mamalina oceur, viz. R. frax- 
inea, R. poly walls. The Borrera fur- 
fuiacea is common on the branches of the pitch pine; Acharius’s varie- 
ty denudata occurs with this species and can only be regarded as an 
accidental variety in which the cilia of the apothecia are wanting: 
A query whether the American species and the English are identical, 
might be set on foot. Thus Hooker says—thallus, bright greenish 
yellow, alike on both sides ; in the specimens found in Chelmsford, 
the under surface is white. Leeanora fulva, Schw., is common 02 
old elms and oaks. Evernia prunastri of Hitchcock’s s catalogue, or 
what has been supposed to be this, has been found in company W 
E. vulpina, which is very common. It has not a slight resemblance 
to the Borrera furfuracea, and it is supposed that B. furfuracea was 
intended by B. purpuracea, given as its synonym. The following is 
the description of the Evernia prunastri; thallo albo, pallescente; Ja- 
— Pearnsay, ; Grento; aes Sgsasy aoa lineari alternatis 
; apothecia disco 
rufescente. ; 
~ Some interesting mosses have also been found, not inserted in Hitch- 
ock’s catalogue. A minute moss found by Edward Tuckerman, Jr. 
on the summit of Bear Hill, Waltham, proves to be Weissia contra- 
2 of the catalogue, and identical with W. viridula, Hedw., give? 
2 Suis species of Polytrichum and a supposed new one have 
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