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Home » Plant infomation

Persicaria chinensis  (L.) H. Gross

   

Botanical Name

:

Persicaria chinensis (L.) H. Gross

English Name

:

Chinese knotweed

Synonym(s)

:

Polygonum chinense L.

Family

:

Polygonaceae

 

General Info

Description

A glabrous perennial herb, 0.3—6 m long, stem often very long and climbing and drooping, ridged, often woody at base. Leaves broadly ovate to oblong, 3—10 cm x 1—5 cm, base rounded, truncate to subemarginate, apex acute to abruptly acuminate, margins often crispate, glabrous or pubescent, petiole 1.5—2 cm long, often with rounded, amplexicaul basal auricles, auricles of highest petioles attached to leaf blade, ocrea 1—2 cm long, membranaceous, glabrous, truncate, veined. Inflorescence a compound corymb, peduncles glandular hairy. Flowers 2.0-3.5 mm across, pedicel c. 1 mm long, ochreolae, ovate, hairy, eglandular, eciliate, tepals 5, 2.5-4 x 1.25-1.5 mm, lanceolate, acute, entire, white or pinkish, accrescent and fleshy. Stamens 7-8, filaments long, filiform, equal, attached to the staminal tube, ovary 1-1.5 x 0.5-0.75 mm, trigonous with 3 filiform styles, free above the middle, connate below, stigmas capitate. Fruits baccate, fleshy, fruiting perianth c. 2 mm thick, fleshy. Nuts trigonous 2-3 (-4) x 1.5-2 mm, included in the fleshy perianth.

Herb Effects

Depurative (decoction of the plant).

Links

PROSEA (Plant Resources of South-East Asia) Foundation
Flora of Pakistan

Chemistry

Pharmacology

Medicinal Use

The juice of the plant is employed in the treatment of eye diseases. A poultice is applied to the abdomen for stomach-ache. A decoction of the plant is used externally to treat eczema of the ears.

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