; 
7 
ya 
ae 
44 Mr. Tuckerman, on some Plants of New England. 
A. perennans: culmis fere decumbentibus basi geniculatis 
ramosis glabris, foliis vage patulis planis glabriusculis s. scabris 
vaginis leevibus, panicula tenui-elliptica laxiuscula ramis verticil- 
latis erectis scabriusculis, glumis haud squalibus acutissimis ca- 
rinis scabris circiter lineam longis, palea glabra vix lineam longa. 
E. T.—Cornucopie ? perennans, Walt. F'l. Carol. p. 7 4, Agros- 
tis anomala, Willd. Sp. 1, 370. Trichodium decumbens, Miche. 
Fi. 1, 42, Muhl. Gram. p. 60. T. perennans, Ell. Sk. 1, 99, 
(Icon.)  T. scabrum, Darlingt. Cest. 1, 54, (non Willd.) 
‘Hab. Carolina, Walter, Fraser, Elliott, Curtis ; Pennsylvania, 
Darlington ; Columbus, Ohio, Sullivant. The habit of this spe- 
cies is very marked, and it is pronounced “ quite distinct” by Dr. 
Darlington. It is as that it does not occur — far to the 
north. 
vA. ALTISSEMA : oiNiid erectis duris rigidis crassiuisculis,. foliis 
longis lato-linearibus scaberrimis vaginis vix glabris, panicula 
coarctata ramis verticillatis erectis rigidiusculis scabris summitati- 
bus dense floridis, glumis magnis subzequalibus lanceolatis acu- 
minatis carinis scabris circiter sesquilineam longis, palea glumam 
superiorem fere squanti tenuissime pubescenti carina scabra. 
K. 'T.—Cornucopie ? altissima, Walt. F'l. Carol. p. 74. Agros- 
tis dispar, Michz. Fl. 1, 51. Trichodium elatum, Pursh, Fl. 1, 
61, 7. n. 4, (anon.) Muhl. Gram. p. 62, (fide Torr.) T’. elatum, 
Torr. Fl. 1, 83.—. lara, (mihi) : panicula laxiori ramis longiori- 
bus viridi.— A. Nove Anglia, (mihi MSS.) 
Hab. (e.) Carolina, Walter, Curtis ; New Jersey, Pursh, Tor- 
rey.—(?.) White Mountains; about brooks in the Notch. The 
description of Walter can hardly be improved as respects the 
prominent features of this very distinct species. Michaux has 
apparently described it under the name of Agrostis dispar; hav- 
ing detected (it would seem) two palex. I have observed in 
the New Hampshire plant, in a single instance, a membranaceous 
development at the inner base of the (inferior) palea, from which 
the bristles usually found on each side of the orifice of the palea, 
seemed to arise. ‘These bristles, it may be remarked, occur in 
every American Trichodium ; though from the generic character 
of Michaux, and the silence of other authors, we might suppose 
they were wanting. The variety 2. above mentioned, is perhaps 
a distinct species, but I could not distinguish its florets from those 
of a. under the microscope. It is a- coarse, green scabrous, rather 
