254 
P0LYG0NE.3E. 
Order LXVII. POLYGONEjE. 
Perianth 3-, 5-, or 6-parted, imbricate. Stara. definite from 
the base of the perianth. Ovary 1, free, with 1 erect ovule. 
Styles and stigmas several. Fr. not bursting, a nut, naked or 
covered by the enlarged perianth. Embryo inverted, usually on 
one side of farinaceous albumen ; radicle remote from the hilum. 
— Stipules usually cohering in the shape of ochrea?. 
1. Rumex. Perianth 6-parted -. the interior segments (pet.) 
large, connivent. Stani. 6, disposed in pairs. Styles 3. 
Nut 1 -seeded, triquetrous, covered by the enlarged inner 
segments of the perianth, embryo lateral. 
2. Oxyria. Perianth A-parted -. 2 interior segments larger. 
Stam. 6. Stigmas 2. Nut 1-seeded, compressed, with a 
membranous wing, larger than the persistent segments of 
the perianth, embryo central. 
3. Polygonum. Perianth 5-parted. Stam. 5 — 8. Styles 
2 — 3. Nut 1-seeded, trigonous or compressed; embryo 
lateral, incurved ; cotyledons not contorted. 
4. Fagopyrum. Perianth 5-parted. Stam. 8. Styles 3. 
Nut 1-seeded, trigonous; embryo central ; cotyledons large, 
foliaceous contor to -plicate. 
1. Rumex Linn. 
* Flowers perfect. Herbage not acid. Lapathum Tourn. 
Docks. 
1. R. maritimus (L.) ; enlarged pet. rhomboidal narrow, each 
with a lanceolate entire point a prominent narrow oblong tubercle 
and 2 setaceous teeth upon each side as long as the pet., whorls 
crowded many-flowered leafy, 1. linear-lanceolate. — E. B. 725. 
— Nut very small with elliptical faces. Smith says that the pet. 
have 4 teeth on each side, I find only 2. A valuable set of fig. 
of the pet. of this genus will be found in Leight. Fl. Shrop. — 
Marshes principally near the sea. P. VII. VIII. 
2. R. palustris (Sm.) ; enlarged pet. ovate-oblong , each with a 
lanceolate entire point a prominent narrow oblong tubercle and 
3 setaceous teeth upon each side shorter than the pet., whorls 
distant many-flowered leafy, 1. linear-lanceolate attenuated below. 
— E. B. 1932. — Nut 3 times as large as that of R. maritimus, 
with ovate faces. The teeth are too short in the E. B. figure. 
Koch says that there are only 2 teeth, I find 3. — Marshy places, 
rare. P. VII.— IX. E. 
3. R. conglomerate (Murr.) ; enlarged pet. linear-oblong ob- 
tuse, each bearing a large tubercle and entire or obscurely toothed 
at the base, vjhorls distant leafy, 1. oblong pointed, lower 1. cordate 
