304. EIGHT MALES. THREE FEMALES, PolygOlUim. 



* * Biftorts wkh one fpike 



Bijioria. 1. P. ftem moft fmiple one-fpikcd, leaves egg'd decur- 



rent upon the petiole. Bljhrt. 



viviparum. 3. P. ftem moft fimple one-fpiked, leaves lanced, vivi^ 



parous. 



* * * Perficarias zvlth Piji'ii tivo-cleft^ or thefamem lefs than eight, 



v'irgtnianutn. ^, P. flowers five-male half-tv^o-female, corols four- 

 cleft unequal, leaves egg'd. virginian. 

 lapathifo- 5. P. flowers five-male half-two-female, ftamens equal to 

 I'lum. the regular corol. lapathiim- leavetL 

 amphibiufn. 6. P, flowers five-male half-two-female, fpike egg'd. 



amphibious, 

 ocrcatum. 8. P. flowers five-male three-female, leaves lanced. 



hooted 

 Hvdropiper. g. P. flowers fix-male half-tvA^o-female, leaves lanced, 



fl;ipules nearly avvnlefs. %uater-pepper. 



Ferficaria. 10. P. flowers fix-male two-female, fpikes egg-ob!ong, 



leaves lanced, ftipules fringed. 

 harhatum. 11. P. flowers fix-male three-female, fpikes twiggy, fl:i- 



pules lop'd brii tie-fringed, leaves lanced. 



bearded, 

 orientale. 12. P. flowers feven-male two-female, leaves egg'd, ftem 



ere6t, fiiipules fhaggy fdver-form. orizntal. 



penfylvani- 13. P. flowers eight-male two-female, peduncles hifpid, 



cum. leaves lanced, fl:ipules awnlefs. penfylvanian. 



* * * * Polygonums with leaves undivided^ Jloiuers eight-male. 



marlti?nu?n.i\. P. flowers eight-male three-female axillary, leaves 



oval-lanced ever-green, ftem fomewhat flirub- 

 growing. fca. 



aviculare. 15. P. flowers ciL!;ht-maie three-female axillary, leaves 



lanced, ftem procumbent herbaceous. bird. 



ere^mn. 16. P. flowers eight-male three-female axillary, leaves 



oval, ftem ereft herbaceous. ere^. 



articulatufn.in. P. flowers eight-male three-female, fpikes jointed 



panicled, ftipules ftieathy lop'd. jointed. 



divarica- 18. P. flowers eight-male three-female racemed, leaves 

 tum. lanced, ftem divaricated expanded, divaricated. 



ferraturn. 7. P. leaves notch'd. jawd. 



fibiricmn. P. flowers eight-male three-female racemed, leaves 



cgg-lanced waved rugged, ftipules fhaggy. S. 



ftberian, 

 * ^ * * * Helxinc 



