188 
OCTANDRIA, TRIGYNIA. 
barbatum. 
Orientale. 
coecineum. 
lanceolate, ochrese smoothish, ciliated at the 
apex. — Willd. 
Icon. FL Dan. 702. Engl. Bot. 756. 
Ladies^ Thumb. 
Easily known from the other species by the blackish or j 
brown-lunate, or heart-shaped spots in the centre of the | 
leaves. In ditches and overflowed places, very commons 
Annual July, August. 
7. P. flowers liexandrous, trigynous, spikes ver- 
gate, oclirese truncate, bristles-ciliate j leaves I 
oblong-acute, smoothish. — Willd. 
P. barbatum, Willd. 
Bearded KnoUweed. 
Slender and delicate, about eighteen inches or two feet 
high. Flowers white or pale-red. Along ditches and in moist 
meadows; common. July. 
8. P. flowers heptandrous, digynous; leaves ovate; 
stem erect; stipules hairy, hypocrateritbrm.— * 
Sp. PL 
Icon. Bot. Mag. 213. Mill. ic. 201. 
Tall Persicaria. 
A very large and elegant species, frequently attaining a 
height of six or seven feet; when the leaves become very large. 
Flowers carmine-red. Introduced, but perfectly naturalized.' 
In wastes, among rubbish, and near garden enclosures, very 
common. Annual. July, August. 
9. P. flowers pentandrous, semi-digynous, spike 
cylindric, ochrea? truncate, smooth, leaves ovate. 
^mild. 
Scarlet or aquatic Knot-weed. 
About a foot or eighteen inches high. Flowers deep crim- 
son-red or scarlet. A handsome species. On the muddy shores 
of the Delaware, Jersey side, between the city and Kaighn’s 
point ; very rare. Perennial. July, August. 
