98 JOURNAL OF THE [October, 



Sctrpus obtusus, Spreng. Syst. i. 204 (1825), not of Willd. 

 Eleocharis egutseioides,Torr. Ann. Lye. N. Y. iii. 296 (1836). 

 Eleocharis Elliott, Dietr. Syn. PI. i. 190 (1839). 

 Scirpus equisetoides, Ell. Sk. i. 79 (1821). 



Scirpus geniculatus, Pursh. Fl. Amer. Sept. i. 55 (1814), not 

 of Linn. 



Sneach Pond, Cumberland, R. L, Olney ; Wellesley, Mass., 

 Morong ; near Lewiston, Del, Nuttall ; Salisbury, Md., Canby ; 

 eight or ten miles from the village of Jacksonburgh, Mich., in 

 a small lake called Sand Lake, J. Wright ; Wilmington, N. C, 

 McCarthy ; Santee Canal, S. C, Ravenel ; Florida, Chapman ; 

 Valley of the lower Rio. Grande, Buckley ; W. Texas, Wright, 

 707; in water, borders of the San Felipe, Bigelow, Mex. Bound. 

 Survey, 1524 ; Ocean Springs, Miss., Tracy, 91. 



Vera Cruz, Mexico, Mueller, 2146; Cuba, Wright, 710, 709 in 

 part, and also, in part, under the name Sc. polygamus, Wr. ; 

 Martinique, Hahn, 546. 



The synonym of Pursh doubtfully referred here by Dr. 

 Torrey (Ann. Lye. iii. 297), can hardly be applied to any other 

 species. Kunth (Enum. PI. ii. 154), attributes the binomial to 

 R. Brown, but that author says only (Prodr. Flora Nov. Holl. 

 i. 224) that Scirpus inter stindus, Vahl, belongs to his genus 

 Eleocharis there first propounded. Roemer & Schultes (loc. 

 cit.) refer it to themselves, and it appears to me, rightly. The 

 same is true of many other species. Boeckeler (Linntea, xxxvi. 

 474) refers the species to E. plantaginea, a widely distributed 

 Indian plant but Mr. Clarke concludes that they may always 

 be separated by the characters afforded by the achenia, 

 although otherwise much alike, and in this conclusion I fully 

 agree. 

 2. E. MUTATA (L.), Roem. & Schult. 1. c. 155 (1817). 



Scirpus mutatus, L. Amoen. Acad. v. 391 (1760). 



Scirpus quadrangulatus, Michx. Fl. Bor. Araer. i. 30 (1803). 



Scirpus marginatus, Muhl. Gram. 28 (181 7). 



Scirpus albomarginatus, Roem. & Schult. Mant. ii. 74 (1824). 



Eleocharis quadrangulata, Roem. & Schult. Syst. Veg. ii. 



15s (1817). 

 Heleocharis spiralis, Boeckl. Linn?ea, xxxvi. 473 (1870), not 



R. & S. 



