106 
*s Knot-grass. _ Fig. 1051, 
eet te Leyes lanceolate, flat. Flowers axillary. Fruit 
smooth and shining. A variety of aviculare? Sea-shores. 6-10 in. 
Ann. July—-Nov. Pink. (2) E. B. Supp. 2805, H. § Arn. 364, 
Bab. 285. Lind. 232. . 
P. maritimum. Sea Knot-grass. Fig. 1052, 
Stem procumbent, woody below. Joimts very short. Leaves lan- 
ceolate, with revolute margins. Stipules as long as the jomts. Sandy 
shores. 4-Gin. Perenn. July—-Nov. Pinkish. (2) #. B. Supp, 2804. 
H. §& Arn. 364. Bab.286. Lind. 212. . 
P. Facorpyrum. Buckwheat. Fig. 1053. 
Leaves cordate-sagittate. Stem nearly upright. Flowers in eymose 
panicles. Fields; naturalized. Seeds edible. 1 ft. Ann. July— 
Sept. Pink. (2) #. B.1, 1044. #. B. 2.574. H.§ Arn. 365. 
Bab, 286. ITand, 212. 
P. Convotyuuus. Black Bindweed. Climbing Buckwheat. Fig.1054. 
Stem twining, angular. Leaves cordate-sagittate. Flowers in 
axillary leafy spikes. Fruit striated with mmute points. A common 
weed. 1-6 ft. Ann. June-Sept. Greenish. (#) #. B. 1. 941. 
EF. B.2.575. H. & Arn. 365, Bab. 286. Lind. 212. 
P. pumetorumM. 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. ($7) #. B. Supp. 2811. H. § Arn. 365. 
Bab. 286. Land. 212. 
P.ampuisiumM. Water 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. 
(¢) #.B.1.436. #. B. 2. 566. H. & Arn. 366. Bab. 284. 
Lind, 211. 
P. Persicarta. 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. (2) F.B.1.756. E.B.2.567. H. §& Arn. 366. 
Bab. 284. Lind. 211, 
P. taxum. Slender-headed Persicaria. Fig. 1058. 
Leaves lanceolate, with short stalks, Stipules fringed, Spikes on 
rough glandular stalks ; sometimes very slender. A variety of Persicaria. 
|-2 ft. Ann. July-Sept. Pinkish. (2) £. B. Supp. 2822. 
A. §& Arn. 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, (2) #. B.1. 1382. 
E. B. 2.568. H. § Arn. 366. Bab. 284. Lind. 212. 
P. MITE, Laz-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. Sx > Jen. 366. 
Bab. 285. Lind, 2a (§) E, B. Supp. 2867. HA. & Arn. 
