Swaziland's Alien Plants Database

Persicaria capitata (Buch.-Ham. ex D.Don) H.Gross
(Polygonum capitatum Buch.-Ham. ex D. Don)
POLYGONACEAE
pink knotweed, pinkhead smartweed
Unknown, Swaziland Status Unknown
Origin: Himalayas and western China
Growth Form: Herb
Plant Description: Mat-forming perennial herbs from a stout woody root; stems prostrate, sometimes rooting at the nodes, 0.5-3.5 dm long, many-branched. Leaves with a conspicuous purple V-shaped band, occasionally also tinged red or purple, elliptic-ovate to elliptic, 1-4 (-6.2) cm long, 0.6-2.5 (-3.3) cm wide, both surfaces sparsely strigillose, margins glandular ciliate, petioles 1-4 mm long, glandular villous, usually with an auricle that clasps the stem, ocreae reddish brown, tubular, to 6-10 mm long, glandular hirsute, apex glandular ciliate. Flowers in subglobose or capitate spikes, these 1 to several at the ends of the branches, peduncles with purple glandular hairs; tepals pink, 2-2.5 mm long. Nuts dark reddish brown, trigonous, ca. 2 mm long, apex beaked, the surface somewhat striate, glossy.
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