ecTANDRiA TRiGYNiA. Polygonum. 



2;i 



*** Spica confertijlora. 

 9. P. caule simplici monostfichyo, foliis ellipticis planis pe- 

 tiolatis, bracteis unifloris 2-3-valvis. 

 In low grounds on the banks of the, Missouri, called 

 Quamash -flats. M.Lewis. 1/ . June, u, 5. Flowers 

 white tingid with red. 

 Caulis teres, glaber. Folia elliptico-oblonga, in petio- 

 lum decurrentia, integerrima, plana, utrinque glabra, 

 subtus glauca, superiova linearia, sessilia. Spim ob- 

 longa. Bractece memhranacess, uniflorae, 2-3-valves ; 

 valvula exterior subrotunda, acuminata, carinata. 

 Cnlyt subinfundibuliformis : laciuiis oblongis acutis. 

 FUamenla 7 — 8. corolla longiora. Siyli 3, 



10. P. caule simplici monostachyo, foliis lanceolato-lineari- 



bus glabris margine revolutiSj spica lineari, bracteis j 

 ovatis acuminatis. 

 In Canada. 1/. June, July. v. s. in Herb. Lamlert. 

 This almost stemless variety I have seen in dried spe- 

 cimens coming from Lower Canada. The specimen 

 in the collection of A. B. Lambert, Esq. came from 

 Labrador. 



1 1 . P. floribus 5-3ndris semi-2-gynis, spica cvlindracea, 



ochreis iruucatis glabris, foliis ovatis. If'^illd. enum. 

 429. 

 P. amphibium. Mich.fi. amer. 1. p. 240. 

 «t. P. foliis ovato-ellipticis obtusis. 



^. P. foliis ovato-oblongis acuminatis. P. Bistorta. Walt. 

 Jl car. 131? 

 a. In lakes and ponds : Canada to Pensylvania. |3. In 

 overflowed places on the Ohio and Mississippi. 1/ . 

 July, Aug. V. V. Flowers dark red. 



12. P. floribns 8-andris semdigynis, spicis oblongis, pedun- 



culis hispidis, foliis lanceolatis, ochreis glabris nudis- 

 que, caule tumide -geniculate. — IV Hid. sp. pi. 2. 

 p. 448. 

 On the edge of ponds and ditches, in overflowed 

 grounds ; common : New York to Carolina, and prin- 

 cipally in the western counties. 0. June— Aug. v. v. 

 Flowers large, rose-coloured. 



13. P. floribus 6-andris semi-2-gynis, spicis ovatoobfengis 



erectis, pedunculis lasvibus, foliis lanceolatis, ochreis 

 glabriusculis apice ciliatis. — IViUd. sp pi 2. p. 44C). 

 Icon. Fl.dan.'JOl. En^l. lot. Jotj. 



listortoides. 



viviparum. 

 l.subacaule. 



coccineum. 



aquaticum, 

 terrestre. 



pensylvani- 

 cuvi. 



Persicaria, 



