POLYANPHIA poLT^YNiA. SagittaHa. 



7. S. foliis lato-lanceolatis inferne angustatis, scapo subra- 



moso, seminibus pteivs fal'^atis rostratis. 

 S. lancifolia. Aiich Jl. timer. 2 p. 1 89. 

 In ponds: Carolina. 1/. July Aug v. s. in Herb. 



Lyon. 



8. S. foliis angjusto-lanceolatis inferne carinatis rigidi'< utrin- 



que aciitissimis, scapo ramoso, floribus nionoicis. 

 In still and deep waters of Oswego river near the great 

 falls, New Yoik. 1/ Jul) , Aug v v. x hi«; s^e- 

 cies grows in a depth of O'ore tlinn seven feet water; 

 the petioles are strong and stitF; the flowers very 

 numerous. 



9. S. foliis lineari-Ianceolatis actrtis inferne angustatis, scapo 



simplici multitloro, tloribus dioicis, bracieis calycibus- 

 que rotundatis ohtusis. 

 In small ponds: New Jersey. % . July, Aug iw. 

 Leaves about six inches long and haif an incn wide; 

 flowers fr^m twelve to eighteen in a scape. 



10. S. foliis lineal ibus longissiinis 3 nervibus, scapo sim- 



plici panciiloro, floribus monoicis, bracteis obongis 



obtusis. 

 S. graminea : foliis lanceolato-linearibus, capitulis pis- 



tillorum pusillis Mich Jl. atner 2 p. 190? 

 In Carolina. Lynn. Canada. Michaux. 11. July, 



Aug. V. s. in Herb. / yon. 



11. S. loliis subalat s basi vaginantibus dorso convexis, scapo 



simplici paucifloro, floribus monoicis, bracteis (.lilata- 

 tis acuminatis. 

 In small livulets and ditches, near Philadelphia. '%. 

 July, Aug, V. V. A small species ; leaves sometimes 

 with a dilated point, represen ing a leaf 



12. S. foliis natantibuselliptico-laticeolatis obtusis 3-nervibu5 



basi attenuatis, u^timis suhcordatis, scapo smipiici 

 paucifloro, pedunculis inferioribus elongatis.— A//t,^. 

 Jl. amer. 2. p I90. 

 In rivulets of Lower Carolina. 7/ . July, Aug. v. t. 

 in Herb, Lyon. Flowers small ; leaves about an inch 

 and a half Icng. 



falcata. 



figida. 



simplex. 



g.ummea. 



aoitifolia* 



natant. 



