188 



OCTANDRIA, TRIGYNIA. 



lanceolate, ochrese smoothish, ciliated at the 

 apex. — Willd. 



Icon. Fl. Dan. 702. Engl, Bot. 756. 



fearbatum. 



Ladies' Thumb. 



Easily known from the other species by the blackish or 

 brown-lunate, or heart-shaped spots in the centre of the* 

 leaves. In ditches and overflowed places, very common. 

 Annual July, August. 



F . P. flowers hexandrous, trigynous, spikes ver- 

 gate, ochrese truncate, bristles-ciliate ; leaves 

 oblong-acute, smootliish. — Willd. 



P. barbatum, Willd. 



Orientate. 



Bearded Knot-weed. 



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. PI. 



Icon. Bot. Mag. 213. Mill. ic. 201. 



coccmeum. 



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, ochres truncate, smooth, leaves ovate. 



— mm. 



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. 



