OCTANDHIA TKIGYNIA. Polygonum. 
*** Spica confertiflora. 
9. P. caule simplici monostachyo, foliis ellipticis planis pe- 
tiolatis, bracteis unifloris 2-3-valvis. 
In low grounds on the banks of the. Missouri, 'called 
Quamash-Jlats. M. Lewis. I/ . June. v. s. Flowers 
white tinged with red. 
Caulis teres, glaber. Folia elliptico-oblonga, in petio- 
lum decurrentia, integerrima, plana, utrinque glabra, 
subtus glauca, superiora linearia, sessilia. Spica ob- 
longa. Bractece membranaceae, nniflorae, 2-3-valves $ 
valvula exterior subrotunda, acuminata, carinata. 
Calyx subinfundibuliformis : laciniis oblongis acutis. 
Filamenta 7 — 8. corolla longiora. Styli 3. 
10. P. caule simplici monostachyo, foliis lanceolato-lineari- 
bus glabris margine revolutis, spica lineari, bracteis 
ovatis acuminatis. 
In Canada. I/. June, July. v. s. in Herb. Lambert. 
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. 
11. P. floribus 5-andris semi-2-gynis, spica cylindracea, 
ochreis truncatis glabris, foliis ovatis. Wilid. enum. 
42 9 . 
P. amphibium. Mich.Jl. amer. 1. p. 240. 
P. foliis ovato-ellipticis obtusis. 
/3, 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. %. 
July, Aug. v. v. Flowers dark red. 
12. P. floribus 8~andris semdigynis, spicis oblongis, pedun- 
culis hispidis, foliis lanceolatis, ochreis glabris nudis- 
que, caule tumide -geniculato. — Wilid. sp. pl. 2. 
p. 448. 
On the edge of ponds and ditches, in overflowed 
grounds 5 common : New York to Carolina, and prin- 
cipally in the western counties. ©. June — Aug. v. v. 
Flowers large, rose-coloured. 
13. P. floribus 6-andris semi-2-gynis, spicis ovato-oblongis 
erectis, pedunculis laevibus, foliis lanceolatis, ochreis 
glabriusculis apice ciliatis. — Wilid . sp. pl. 2 p. 446. 
Icon, FLdan. 702. Engl. lot. /56. 
2 71 
bistorioides 
viviparum . 
subacaule. 
coccineum. 
aquaticum. 
terrestre. 
pensylvani - 
cum. 
Perskaria. 
