270 34. Persicaria. 15. POLYGONEiE. Pl.ex.mon . 
Persicaria folio subtus incano, Dillen in Raii Syn. 145, 5. 
Polygonum incana, Willd. Sp. PI. 446. 
Polygonum tomentosum, Schrank Eav. 1,669. 
Polygonum Persicaria / 3 , Smith FI. Brit. 424. 
Polygonum turgidum, Theuil. Par. 2, 199. 
Polygonum scabrum, Moench Meth. 629. 
Water pepper. 
Corn-fields ; annual ; July. 
Stem 18 in. high; leaves spread; spikes reddish. — Plant 
acrid, like pepper. 
6. Persicaria lapathifolia . Dockleaved peachwort . 
Stem patulous ; leaves ovate, lanceolate, bald ; stipules 
not fringed ; peduncles rough, glandular ; spikes ovate, erect, 
becoming drooping ; thecidium compressed, concave on 
each side ; style 2-lobed. 
Hydropiper, Ger. em. 445, 1 . 
Persicaria mitis major, foliis pallidioribus, Raii Syn. 145, 6. 
Polygonum lapathifolium, Lin. S. P. 517. 
Polygonum pallidum. With. Bot. Arr. 381. 
Polygonum Persicaria Huds. FI. Angl. 170. 
Polygonum Pennsylvanicum, Curt. Fl.Lond. 
Dunghills and cornfields ; annual ; July and August. 
Stem upright, 3 feet high ; leaves pale green, mealy; 
upper leaves glandular ; spike thick, ovate. 
0. rubra . Stem and flower red. 
7. Persicaria maculata . Spotted peachwort. 
Stem patulous, spotted with red ; leaves ov^ite, lanceolate; 
beneath bald, whitish ; stipules not fringed ; peduncles rough, 
glandular ; spikes oblong, slender ; style 2-lobed. 
Persicaria lati folia gen icu lata, caul i bus maculatis, Dillen in Raii Syn. 
145, 8. 
Polygonum Persicaria, >j, 8, Huds. FI. Angl. 
Polygonum pallidum 3, With Bot. Arr. 
Polygonum Pennsylvanicum, var. Curtis Fl.Lond. 
Polygonum lapathifolium y. Smith FI. Brit. 425. 
Ditches and watery places ; annual ; September. 
Upper leaves smooth, dotted beneath ; lower leaves blueish 
white, downy, not dotted ; spikes slender, whitish green, 
becoming reddish. 
8. Persicaria salicifolia. Willow-leaved peachwort . 
Stem decumbent ; leaves ovate, lanceolate, hoary be- 
neath ; stipules not fringed; peduncles rough, glandular; 
spike ovate ; stamens 6 ; styles 2. 
