371 
Polygonum .] lxxii. polygonace-e. 
erect, flex nose, 1 foot high, branched. Flowers in spreading panicles, 
terminal and lateral, pale-reddish. Stamens 8. Cotyledons large, 
foliaceous, contorted and plaited. An excellent food for poultry. 
•j"f Stems twining. Flowers racemose. 
7. P. Convdlvulus L. {climbing B.) ; leaves cordate-sagittate, 
stem twining angular, segments of the perianth bluntly keeled 
(rarely winged), achene opaque striate with inihute points. 
E. B. t. 941. 
Corn-fields, frequent. Q. 7 — 9. — Very long, climbing. Spikes 
lateral and leafy, of 4 whorled greenish flowers. The specimens with 
a winged perianth are of rare occurrence, and chiefly met with in the 
Isle of Wight. 
8. P. dumetorum L. ( Copse B.)-, leaves cordato-sagittate, 
stem twining striate, segments of the perianth with a mem- 
branous wing, achene quite smooth and shining on the surface. 
E. B. S. t. 2811. 
Thickets in the south of England, but seldom found above a year 
or two in the same place. ©. 8, 9. — Too closely allied to the 
winged variety of the last species. 
**** Styles mostly 2. Achene compressed or triquetrous. Stem usually 
branched. Stipules truncate. Persicaria. 
■(■ Creeping, perennial. 
9. P. amphibium L. (amphibious B.) ; creeping, stamens 
6, styles 2, spike dense oblong-ovate, achene smooth shining, 
leaves petiolate, stipules membranous narrow. E. B. t. 436. 
— a. aquaticum ; leaves floating broadly lanceolate glabrous, 
spikes oblong.— 3. terrestre ; nearly erect, leaves narrow-lan- 
ceolate rough with short rigid adpressed hairs on both sides, 
spikes ovate. 
Margins of ponds, lakes, and ditches, and damp ground, frequent. 
%. 7, 8. — Stem 2 — 3 feet long, and scarcely branched when grow- 
ing in the water. Leaves arising from long tubular sheaths, glabrous 
in a. but hispid in p Spikes mostly solitary, terminal, of a bright 
rose-colour. The only perennial species of the Persicaria group. 
If Root annual, fibrous. 
10. P. Persicaria L. (spotted P.) ; stamens usually 6 (or 
rarely 8), styles 2 — 3 connected to the middle, spikes compact 
ovate-oblong cylindrical erect, peduncles and perianths nearly 
smooth, achene compressed and gibbous on one side or trique- 
trous, leaves lanceolate (often spotted), stipules lax strongly 
fringed. E. B. t. 756. 
Moist ground and waste places, frequent. ©. 7 — 10 Stems 
erect, branched, 1 — 2 feet high. Spikes terminal and lateral, dense, 
r 6 
