46 Mr. Tuckerman, on some Plants of New England. 
Hab. Cambridge; wet margins of Fresh Pond brook. Muh- 
lenberg mentions that his plant above mentioned, was sent him 
from New England; and it seems almost certain that it was a 
branch of this Poa, from which part of the florets had fallen off. 
He compares it with P. capillaris, but it seems very distinct from 
that species. In a large number of specimens of the plant, in 
several states of development, I observe no variation from the 
above characters. 
Aspipium acuLEatum, (Sw.) Hook. Brit. FV. edit. 1, 1, 443, 
Hook. Bor. Amer. 2, 26. A. aculeatum, Pursh, Fl. 2, 662. 
Hab. Green Mountains, Vermont, Pursh, 1806. Moist rocky 
mountain forest, near the base of the Chin of Mansfield, the 
highest of the Green Mountains, Vt., Macrae and Tuckerman, 
1840. Also at Indian Pass, in the highlands near Mount Marcy, 
New York, Mr. Macrae. The New York specimens were pro- 
nounced by Sir William Hooker to be exactly the plant of the 
British Flora. It is an interesting and very beautiful addition to 
the New England Ferns, and seems to have been lost since 
Pursh’s time ; having escaped the notice of Boott and Robbins, 
being wholly omitted by Bigelow and Torrey, and referred, as a 
doubtful synonym, to A. spinulosum by Beck. 
Lycopopium annorinow, (L.): caule repente ramosissimo ramis 
adscendentibus bi-tri-partitis, ramulis simplicibus in spicas solita- 
rias sessiles terminantibus, foliis quinquefariis lineari-lanceolatis 
mucronatis apice serrulatis patentibus acerosis ad incrementa an- 
nuacontractis. Wallr. Fl. Crypt. 1,33, Micha. Fl. 2,283, Torr. 
Comp. p. 388.—8. montanum, (mihi): nanum quadrifolium. LZ. 
sabinefolium, Beck, Bot. p. 461, (non Michz. nec Hook. ) 
Hab. (c.) Rocky and mountain forests; Manchester, Oakes; 
White Mountains. ((.) Alpine districts; White Mountains, Green 
Mountains. The leaves of my low country specimens from 
Scotland and Bavaria, as well as those from the base of the 
White Mountains, and from Manchester, are regularly, so far as 
I have examined, in fives. In $, on the contrary, they occur 
only in fours. In an alpine Scottish specimen, which seems 
to be marked by the same habit as our American plant, they 
are also disposed in fours. It is possible this character is not 
found to be constant in Britain, for the alpine form is not distin- 
suished by British writers. 'That, however, it is not unknown 
to occur there, will appear from Hooker, (Brit. Fl. 1, 452,) who 
