E-Flora BC: Electronic Atlas of the Flora of British Columbia

Persicaria punctata (Elliot) Small
dotted smartweed
Polygonaceae (Buckwheat family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #21933)

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Distribution of Persicaria punctata
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Species Information

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Annual herb from a rhizome; stems prostrate to erect, solitary from the rooted rhizome, few to numerous, 30-100 cm tall/long.
Basal leaves lacking; stem leaves alternate, lanceolate, mostly smooth, 5-10 cm long, short-stalked; stipules sparsely hairy, 10-15 mm long, sometimes fringed with bristly hairs at the tops.
Inflorescence of axillary and terminal, spikelike, interrupted racemes; perianths greenish with white margins, glandular-dotted, 5-lobed to about 1/2 the distance to the base; stamens usually 8.
Achenes, 2- to 3-angled, deep brownish-black to black, smooth, shiny.
Closely related to P. hydropiper.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Swamps and wet meadows in the lowland and steppe zone; rare in SW (lower Fraser Valley) and SC BC; E to NB and NS and S to FL, TX, MX and CA; S. Asia.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Polygonum punctatum Elliott

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References