OCTANDRIA. TRIGYNIA. 25-5 



shining-. IIab. On the sandy beach of the sea, around 

 F.g'.q,- Harbour, New Jersey; possesses much the aspect of 

 P. uviculare, but produces flowers which are conspicuous 

 and elegant, and occurs in situations which pronounce it 

 native; not nat urahzed as aviculare, the seed is also remark- 

 ably distinct. -2. tnaritimum of Europe has never yet been 

 found on the American sea-coast. Ons. The vvnole 

 plant g-biucoas, very diffuse, [jianches with numerous 

 nodes, stipules laceiate, 3 to 5-tlowered, flowers white 

 and ex.serted, set^ments obtuse; fikmenis of the stamina 

 very short arid dilated. 3. ramosissimvm. 4. tenue. 5. Ily- 

 dropiperofdes. 6. mite. 7-fdrsutum. The wliole plant hirsute- 

 ly pubesceui; leaves lanceolate. 8. idrginianum. 9. bistjr- 

 toides. Fh. This species is probably a variety of bistorta. 

 10. viviparum. 11. coccineiim. Sparingly met will) in liie 

 vicinity ot' Philadeipi^ia. l2. fiemijhanicuin. 13. Pers^tft- 

 ria. 14 orienUde. Partly naturalized. 



— Leaves sagittate or cordate 



15. sagittatum. 16. arifolium. 17. Fagopyrvm- T^^ick- 

 wheat, merely cult.vated, not naturalized. 18. Coiiv/ml- 

 lus. Introduced. 19. cillnode. 20. scanderis. 



§ II. PoLYCOXELLA. Calix 5-leaved. Och^^ce \'fl'>i'.<er- 

 ed; racemes dichotomously paniculate; leaves spaitiuiale, 

 small, (flowers often dioicous.) — Stamens 8. Stigmas 3, 

 subcapitate. 



21. articidatum. Annual; flowers hermaphrodite, nutont, 

 as long as the capillary peduncles; peduncle articulated 

 near its base; fruit acute-angled, as long as the spreading 

 calix; flowering stems nearly naked; leaves spathulate- 

 iinear obtuse. Hab. Canada to Virginia, in sandy and 

 barren soil: also on the banks of Fox Kiver and Lake Mi- 

 chigan (Michigan Territory.) A very elegant species 

 with spreading rosaceous flowers, sometimes white. Obs. 

 Stem about a foot, in flower mostly naked, much branch- 

 ed, branches erect, copiously floriferous. Flowers spread- 

 ing and obtuse, antiiers purple; styles none; stigmas 3, 

 subcapitate as in the 2 following species; ochreae of the 

 flowers truncate, unidentate also as in the 2 following, 

 but larger. 



22. * gracile, Dioicous: glaucous, annual; racemes very- 

 slender, filiform; flowers deflected, at first minute, much 

 longer than the peduncles; peduncle articulated to the 

 calix; fruit acuminated longer than the connivent calix; 

 flowering stems nearly naked; leaves spathulate-linear, 

 obtuse. Hab. In Georgia? Dr. Bahhvyn. Very similar 

 to the preceding in habit, although a very distinct spe- 

 cies, about a foot high, much less branched than P. ar- 

 ticidatum, branches very slender, somewhat spreading, 

 coming out abuve the ochres, perfectly lateral, unaccom- 



