48 Mr. Tuckerman, on some Plants of New England. 
altered in this respect the Linnean phrase. In like manner, 
Michaux and Torrey have substituted ‘“integris” in their descrip- 
tions. I have also observed in our plant, and in French speci- 
mens, a very marked approach to denticulation, and in several 
Bavarian specimens, regular teeth.- A. alopecuroides is a much 
larger plant, and the teeth seem to be always present and con- 
spicuous, as Dillenius remarks, to the naked eye. The plant 
here considered the variety @. is sometimes as large as that just 
mentioned, but the leaves are less subulate, with but few teeth, 
or often all quite entire. The variety alopecuroides, if this view 
be correct, is the extreme southern American form of the species, 
the variety Bigelovii intermediate, and perhaps not occurring 
north of Massachusetts, and «. the extreme northern state, com- 
mon to us with Europe. ~ ee 
L. Sexaco, (L.): foliis sparsis octofariis lineari-lanceolatis acu- 
inatis integerrimis imbricato-patulis rigidis lepidotis, caule dicho- 
tomo erecto, ramis fastigiatis summis fertilibus.. Wallr. Crypt. 
Fi. 1, 32.—«, densum, (Wallr.) : foliis omnibus adpressis. LB. 
densum, Lam. LL. Selago, Engl. Bot. t. 233, Bigel. Bost. p. 
386, Torr. Comp. p. 389.—%. recurvum, (Wallr.) : foliis omnibus 
patenti-squarrosis ramisque subrecurvis. Wallr.Crypt. FU.(1831,) 
Hook. Fl. Bor. Amer. 2, 266. L. recurvum, Kitaib. in Willd. 
Sip. 550. 
Hab. («.) Alpine summits of high mountains ; White Moun- 
tains, Green Mountains, in Vermont ; also in the Notch of the 
White Mountains, near the road. (f.) In the alpine regions of 
the White Mountains ; also beautifully distinct on rocks at the 
Flume, in Lincoln, N. H., where it was first found by J. Brad- 
ford, Esq., in 1839, and afterwards by myself, at the same spot, 
in 1840. This last is quite different in aspect, especially the 
Lincoln plant, and is distinguished by Hooker, in his Flora Bor. 
Americana. The leaves are narrower than in «, and all more or 
less-patent, squarrose or recurved. The branches are also some- 
what recurved. 
Cerraria Tuckermann, (Oakes): thallo albo-virescente reticu- 
lato-lacunoso glabro subtus nigro fibrillis sparsis, laciniis compli- 
catis adscendentibus sinuato-lobatis. marginibus crispis, apophysi- 
bus minutis nigris punctiformibus instructis, apotheciis elevatis 
spadiceis margine thallode evanescente cinctis demum perforatis. 
C. lacunosa, Hals. Syn. View, Hitchcock, Catal. Mass. p. 124, 
Tuckerman, Lich. N. Eng. in Jour. Bost. p. 9, (non Ach.) 
4 
