168 ACCOUNT OP SOME SPECIES OP 



Observations. 

 Specimens of this plant were transmitted to Dr. Muhlenberg, in 1813. Al- 

 though he referred it to his Scirpits cyperiformis, it is sufficiently distinct. It 

 differs principally by its erect culm, solitary head, and its shorter, nafrower. 

 and coloured spikelets. 



Cyperus ovatus. 



Culmo subniido : foliis linearibus : involucro subtetra- 

 phyllo : capitulis ovatis, obtusis, sessilibus, et pedunculatis : 

 pedunculis subteretibus, striatis, brevibus : ocreis obtusis : 

 spiculis linearibus, 4 — fi-floris, bibracleatis : squamis ovatis, 

 subacutis, remotiusculis : semine triquetro, nigro. Pistillum 

 trifidum. 



Eoot fibrous. Culm about one foot higli, acutely trique- 

 trous. Leaves shorter than the culm, the sheaths open, and 

 purplish at base. Leaves of the involucre resembling those 

 of the culm, slightly scabrous on the margins. The heads, 

 as far as I have seen, are four in number, pedunculate, and 

 sessile. Spikelets generally 6-flowered, the superior flower 

 abortive. From one to two very small, obtuse, empty scales 

 are sometimes found beneath. 



Inhabits low moist situations near St. Mary's in Georgia, 

 And appears to flower throughout the summer. 



Observations. 

 There are still a considerable number of new or doubtful species of Cyperus 

 in the United States; and I have several belonging to this division of the ge- 

 nus from South America. An account of which, with observations on the es- 

 sential character of the genus, I reserve for a future occasion. 



An Account of four Species of Kyllifigia, &'c. 



Calyx Q-valvis. Corolla nulla. 



Kyllingia tenuis. 



Culmo triquetro, temii.^ basi folioso : foliis angusto-lanceo- 

 latis acutis ; involucro tnphyllo j eapitulo globoso, minimo : 



