06. POLTGONACE^. 
281 
Order LXVI. POLYGONACE^. 
Perianth 3 — 6-parted, imbricate. Stam. definite, from the base 
of the perianth. Ovary 1, free, with 1 erect ovule. Styles and 
stigmas several. Fr. not bursting, a nut, nalved or covered by 
the enlarged perianth. Embiyo inverted, usually on one side of 
farinaceous albumen ; radicle remote from the bile. — Stipules 
usually cohering in the shape of ocrete. — For figm'es of the ge- 
nera see G. F. G. Monochl. 
1. RuMEX. Peiianth Q-parted ; 3 inner segments (pet.) large 
with fr., connivent. Stam. 6, disposed in pairs. Styles 3. 
Stigmas multifid. Nut triquetrous, covered by the enlarged 
inner segments of perianth ; embryo lateral. 
2. OxYHiA. Perianth 4-2}afted ; 2 inner segments (pet.) 
larger. Stam. 6. Stigmas 2, multifid. Nut compressed, 
with a -membranous wing, larger than the persistent seg- 
ments of perianth ; embryo central. 
3. Polygonum. Perianth 5-parted. Stam. 5 — 8. Styles 
2 — 3. Stig. capitate. Nut trigonous or compressed; em- 
bryo lateral, incm-ved ; cotyledons not contorted. 
4. Fagopyeum. Perianth 5-parted. Stam. 8. Styles 3. 
Stig. capitate. Nut trigonous; embryo central ; cotyledons 
large, leaflike, plicate-twisted. 
1. Ru'mex Linn. Dock. 
* Fl. perfect. Herbage not acid. Lapathnm Toum. 
1. P. marit'imus (L.) ; enlarged pet. rho7nboidal n&rTOw, ea.ch 
with a lanceolate entire point a prominent naiTow oblong tubercle 
and upon each side 2 setaceous teeth as long as the pet., whorls 
crowded many-floweied leafy, 1. all linear-lanceolate narrowed 
at both ends. — F. P. 725. — Nut veiy small; faces elliptic. — 
Marshes principally near the sea. P. or B. YII. "VT^II. Gdden 
Dock. E. S. I. 
[iE. limSsus (Thuil.) ; enlarged pet. ovate-oblong on each side 
2 setaceous teeth, whorls distant, 1. all linear-lanceolate narrowed 
at both ends. P. pahistris Koch, St. 73. 2. Gold Dock Pet. 
t. 2. f 7. A plant to be looked for. See Pot. Gaz. i. 296.] 
2. P. palm'tris (Sm.) ; enlarged jM. ovate-oblong, each with a 
lanceolate entire point a prominent narrow oblong tubercle and 
upon each side 2 or 3 setaceous teeth shorter than the pet, whorls 
distant many-flowered leafy, root-1. naiTowly lanceolate rounded 
or slightly decurrent below. — Curt. i. 68. — Nut 3 times as large 
