OCTANDRIA, TRIGYN1 \. 187 



Vtax-learced Polygonum, 



it inches high. Flowers small, white or 



r*i!i--!)lossom-rcil. In (!:•} >:uul\ fields of Jersey, and on the 



'Mimous near Camden ; common. In a sand] field a 



mile <>r two shove the Wis of Schuylkill, west side; frequent. 



Annual. July. 



2. Flower* spiked and terminal, 



I, P. flowers pentandrousi digynous, nnrqnnl ; tihIbIsb— 

 leaves broad-oval ; spike very long, virgate, 

 lowers remote* • 



P. rostratum, Muhf. 



P. bistorta, Walt I 



From eighteen inches to two feet high. Flowers small) 

 white, inconspicuous Seed rostrate. In shadj woods not 

 nnfrequent In the woods of Powehon, abundant Perennial. 



June, July. 



I, 1*. flowers crowded) octandroiiS) with the style PeraMyfr* 

 :-< i ■{'[ : peduncles hispid; stipules glabrous;" 

 leaves lanceolate, a little hairy. — Sp. i'[. 



Pennsylvania h'not-weed. 



Flowers large, rose-coloured. Plant from one to two feet 

 high. In cultivated fields and on the borders of ditches; com- 

 mon. Annual. From midsummer till autumn. 



5. 1*. flowers octandrouSj semi-trigynous, leaves Fustraav, 



lanceolate) smooth ; ot hiv;e loose, smooth, rili- 

 ate at tin* apex) spotted; spikes filiform) weak. 

 sobnutani : bractes somewhat remote) alter- 

 nate. — Mich, 



P, punrtatum, Elliot. 



P. bydropiperoideS) Pursh) not Mich. 



P. b) dropiper, Mich. 



P. persicaria) \\ alt ? 



Water-pepper Knot-treat. 



Orow9 with No. 4, and No. 6. Perennial. All summer. 



o. P. flowers bexandrous, semi-digynouS) spikes rsniassfc 



ovate-oblong, erect, peduncles smooth ; leaves 



