North American CijlKrucea:. 501 
Pine barrens of New Jersey ! ; on Long Island near Baby- 
Ion ! ; Tewksbury pond, Massachusetts, li. D. Greene, Esq. ! 
Fruit mature in August and September. 
Obs. Nearly allied to E. palustris, but differs in its shorter 
ovate and more obtuse spikes, compressed, sulcata culm, more 
obtuse scales, and dark-olive nut. It is also much shorter 
than the ordinary form of that species. The upper scales are 
sometimes rather acute. 
6. Eleocharis uniglumis. Lint. 
Culms stoloniferous at the base, terete, striate ; spike oval ;' 
scales ovate, rather obtuse, the lowest one large, and embracing 
nearly the whole base of the spike; style 2-parted, very thick 
at the base. 
Eleocharis uniglumis, Link, hort. Ber. 1. p. 281, (fide N. ah Escnh.) 
N. ah E. in WighVs contrih. p. 113; Schull. mant. 2. p. 88. 
Scirpus uniglumis, Link. jarh. 3. p. 77; Mert Sf Koch, fl. Germ. !.■ 
p. 427; Weihe! deut. grass, uo. 278. 
Culm with truncated sheaths at the hase. Lowest scale semicircular, 
green with a fuscus horder ; the others with a white m-orgin and a narrow 
green keel. — N. ah E. 
Hab. North America, A^. ab E. Also a native of Gef- 
many and Nepal. 
Obs. North Amei'ican specimens of this Eleocharis have" 
riot come under my observatibn, but I have examined authentic 
specimens of the plant in the caU'ection of German grasses by 
Weihe, quoted above. It strongly resembles depauperate 
specimens of E. jialuntris, and cannot, I tliink, be separated" 
from that species. Almost the only differences I have been 
able to observe, are the more obtuse spike, with the broad 
clasping scale at its base, and the less distinct tubercle, in E, 
Uniglumis. In the works quoted, the fruit is not described ;' 
but in Weihe's specimens, which contain mature fruit, the nut' 
is precisely that of E. palustris, though the tubercle which' 
crowns it is closely sessile. 
