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

Amaranthus powellii S. Watson
Powell's amaranth (Bouchon's amaranth; green pigweed)
Amaranthaceae (Amaranth family)

Introduction to Vascular Plants

© Frank Lomer  Email the photographer   (Photo ID #27022)

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Distribution of Amaranthus powellii
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Species Information

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Annual herb from a taproot; stems erect, simple to freely branched, 0.3-2.0 m tall, grooved, often reddish, glabrous to short-hairy or sparsely hairy below the flowers.
Alternate or opposite, leaf blades 2.5-14 cm long, glabrous or nearly so, egg-shaped to deltoid-elliptic.
Inflorescence in terminal and axillary spikes; bracts linear-lanceolate and spiny; sepals unequal; stamens 3-4.
Capsules opening along an "equator", the top coming off like a lid, 1-seeded; seeds 1 mm long, lens-shaped.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to dry fields, disturbed areas and waste places; infrequent in SW and SC BC, known from the Gulf Islands, the Vancouver area and the Okanagan Valley; throughout N. America, S. America and the Old World.

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.

Taxonomic and Nomenclatural Links

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General References