North American Cyjjeracea. 423 
143. C. TRICHOCARPA, MuM. ! in Willd. sp. 4. p. 302 ; 
Schkuhr, car. f. 148. 
Hab. Briiish America ! to Georgia ! 
144. C. LACUSTRis, Willd. sp. 4. p. 306 ; Schkuhr, car. 
f. 182. 
C. riparia, Muhl. ! gram. p. 259. 
Hab. Canada to South Carolina ! — Distinguished from 
C riparia by its strongly nerved fruit with a more acutely bifid 
mouth. 
145. Carex MiCRODONTA", Torr. ^^ Hook. 
Staminate spikes 3 ; fertile spikes about 4, exsertly pedun- 
culate, erect, cylindrical, attenuate and more or less stami- 
niferous at the summit ; fruit ovate, compressed, obscurely 
striate, acute, with a minutely bidentate orifice, scarcely ex- 
ceeding the broadly ovate, acuminate, somewhat cuspidate 
scale. 
Culm ■? feet high, slender. Leaves 2 — 3 lines wide. Fertile spiles 
an inch and a half long, about 3 lines in diameter, gradually attenuate 
into a point; peduncles as long as the spikes. Fruit 2 lines long, acute 
but scarcely acuminate, the orifice almost entire. Scales of the stami- 
nate spike ovate, acuminate. 
Hab. Texas, T. Drummond ! (Texas collection, HI. no. 
439.) 
Obs. This species seems to be allied to C. paliidosa, but 
is much smaller in all its parts ; its fruit is very distinct. 
146. C. BiNERVis, Smith, Eng. lot. t. 1099 ; Hook. Eng. 
Jlora, p. 396 ; Dewey! car. I. c. 30. p. 61. 
Hab. Boston, B. D. Greene, Esq. ! — Agrees verj nearly 
with the European plant. Introduced.^ 
Vol. III. 54 
