Norch American Cijj)C)ucecc. 801 



Pine barrens of New Jersey ! ; on Long Island near Baby- 

 lon ! ; Tewksbury pond, Massachusetts, B. D. Greene, Esq.! 

 Fruit mature in August and September; 



Obs. Nearly allied to E. pahistris, but differs in its shorter 

 ovate and more obtuse spikes, compressed, sulcate 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. 



G. Eleocharis uniglumis, Linl'* 



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 Wight's contrih. p. 113; Schull. mant. 2. p. 88. 



Scirpus uniglumis, Link. jarh. 3. p. 77; Mert Sf Koch, fl. Germ. 1. 

 p. 427; Weihe! dent, grass, no. 278. 



Culm with truncated sheaths at the base. Lowest scale semicircular, 

 green with a fuscus border; the others with a white margin and a narro\v 

 green keel. — N. ah E. 



Hab. North Am.erica, N. ah E. Also a native of Ger- 

 many and Nepal. 



Obs. North American specimens of this Eleocharis have 

 not come under my observation, but I have examined authentic 

 specimens of the plant in the collection of German grasses by 

 Weihe, quoted above. It strongly resembles depauperate 

 specimens of E. jialustris, and cannot, I think, be separated 

 from that species. Almost the only difterjences 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. 

 uniglumu. In the works quoted, the fruit is not described; 

 but in Weihe's specimens, which contain mature fruit, the nCIt 

 is precisely that of E. imlustris, though the tubercle which 

 crowns it is closely sessile. 



