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

Amaranthus blitoides S. Watson
prostrate pigweed (mat amaranth; prostrate tumbleweed)
Amaranthaceae (Amaranth family)

Introduction to Vascular Plants

© Paul Handford  Email the photographer   (Photo ID #81073)

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Distribution of Amaranthus blitoides
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Species Information

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Annual herb from a taproot; stems prostrate or decumbent, several, glabrous to short-hairy, 30-70 cm tall.
Alternate or opposite, the blades rarely over 3 cm long, diamond-shaped to egg-shaped, callous-margined, bristle-tipped narrowing to a slender stalk.
Inflorescence in small axillary clusters; bracts narrowly lanceolate, bristle-tipped; tepals 4-5; stamens 3-4.
Capsules opening along an "equator", the top coming off like a lid, 1-seeded; seeds 1.3-1.7 mm long, lens-shaped.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry disturbed areas in the lowland, steppe and montane zones; infrequent in S BC; throughout N. America, W. Indies, Europe.

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

Amaranthus graecizans L.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References