106 
P. Rayii. Ray's Knot-yruss. Fig. 1051. 
Stem procumbent. Leaves lanceolate, flat. Flowers axillary. Fruit 
smooth and shining. A variety of aviculare ? Sea-shores. 6-10 in. 
Ann. July-Nov. Pink, (f) E. B. Supp. 2805. H. fy Am. 364. 
Bab. 285. Lind. 232. 
P. maritimum. Sea Knot-grass. Fig. 1052. 
Stem procumbent, woody below. Joints very short. Leaves lan¬ 
ceolate, with revolute margins. Stipules as long as the joints. Sandy 
shores. 4-6 in. Perenn. July-Nov. Pinkish, (f) E. B. Supp. 2804. 
U.fyArn. 364. Bab.286. Lind. 212. 
P. Fagopyrum. Buckwheat. Fig. 1053. 
Leaves cordate-sagittate. Stem nearly upright. Flowers in cymose 
panicles. Fields; naturalized. Seeds edible. 1 ft. Ann. July- 
Sept. Pink, (f) E.B. 1. 1044. E. B. 2. 574. H. Am. 305. 
Bab. 286. Lind. 212. 
P. Convolvulus. Black Bindweed. Climbing Buckwheat. Fig.1054. 
Stem twining, angular. Leaves cordate-sagittate. Flowers in 
axillary leafy spikes. Fruit striated with minute points. A common 
weed. 1-6 ft. Ann. June-Sept. Greenish. (^) E. B. 1. 941. 
E.B. 2. 575. H. fy Am. 365. Bab. 286. Lind. 212. 
P. dumetorum. Copse Buckwheat. Fig. 1055. 
Leaves cordate-sagittate. Stems twining. Flowers in racemes. 
Fruit quite smooth, covered by the winged calyx. Woods. 4-6 ft. 
Ann. Aug.-Oct. Greenish. (|) E. B. Supp. 2811. H.fy Am. 365. 
Bab. 286. Lind. 212. 
P. amphibium. Heater Persicaria. Water Bistort. Fig. 1056. 
Root creeping. Flowers in dense ovate spikes. Leaves, when 
floating, broad, ovate-oblong; when not in water, lanceolate, with short 
hairs. Ponds and wet places. Perenn. July and Aug. Rose-colour, 
(f) E. B. 1. 436. E. B. 2. 566. H. £ Am. 366. Bab. 284. 
Lind. 211. 
P. Persicaria. Spotted Persicaria. Fig. 1057. 
Leaves lanceolate, nearly sessile, often with a dark spot in the 
middle. Spikes oblong-cylindrical, on smooth stalks. Stipules fringed. 
Styles united to the middle. Moist ground ; common. 1—2 ft. Ann. 
July-Oct. Pinkish, (f) E.B. 1.756. E.B.2.567* H. fy Am. 366. 
Bab. 284. Lind. 211. 
P. laxum. Slender-headed Persicaria. Fig. 1058. 
Leaves lanceolate, with short stalks. Stipules fringed. Spikes on 
rough glandular stalks ; sometimes very slender. A variety of Persicaria. 
1-2 ft. Ann. July-Sept. Pinkish. (£) E. B. Supp. 2822. 
H. Am. 366. Bab. 284. Lind. 332. 
P. lapathifolium. Pale-flowered Persicaria. Fig. 1059. 
Leaves ovate-lanceolate, on short stalks. Stipules not fringed. Spikes 
on rough stalks. Styles distinct. Dunghills and waste ground ; com¬ 
mon. 1-2 ft. Ann. July and Aug. Greenish. (§) £'.£.1.1382. 
E. B. 2. 568. H. ^ Am. 366. Bab. 284. Lind. 212. 
P. mite. Lax-flowered Persicaria. Fig. 1060. 
Leaves lanceolate, with short stalks. Stipules hairy. Spikes very 
slender and interrupted. Styles united to the middle. Waste ground. 
1-2 ft. Ann. Aug. Pink. (§) E. B. Supp. 2867. LI. ^ Am. 366. 
Bab, 285. Lind. 332. 
