No. Vll. 



An Account of two North American Species of Cyperus, disco- 

 vered in the State of Georgia : to which is added four Spe- 

 cies of Kifllingia, found on the Brazilian coast, and on the 

 Rio de la Plata in South America. By William Baldwin, 

 M. D.—Read iGth April, 1819. 



Culmo Iriquetro. Spiculis terminalibus capilidis.. 



Cyperus sparsiflorus. 



Culmo suhnudo, erecto : foliis canaliculatis, nervosis, sca- 

 bris : capitulo gjloboso : iiivolucro 3 — 4-{)hyllo, foliolis cana- 

 liculatis scal)iis: spiculis laiiccolatis, acutis, 4 — 7-floris : 

 squamis remotis, ovatis, obtusis .• seininc triquetro, basi at- 

 tenuate. Pistillum trifulum. 



Root tuberous. Culm — 12 incbes bi^li, somewbat 3-an- 

 gled, and always erect. Leaves narrow, cbannellcd, witli 

 setaceous points, sborter tban tbe culm. Sheaths open, tinged 

 witli purple at base. Leaves of tbe involucre 3 — 4, rarely 

 5. one or more mucli longer tban tbe bead. Heads always 

 solitary. Spikelels generally very numerous and compact, 

 varying consideral)ly in lengtb and appearance. Scales ge- 

 nerally remote, l)ut sometimes close. Keels green, tbe mar- 

 gins a ycUowisb brown colour. 



Vibabits pine barrens in tbe vicinity of Savaonah and St. 

 Mary's Georgia. Flowers, May — October. 



