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

Artemisia biennis Willd.
biennial wormwood
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #19668)

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Distribution of Artemisia biennis
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Species Information

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Annual or biennial, slightly aromatic herb, from a taproot; stems erect, grooved, glabrous, branched above, 0.3-2.0 (rarely 3.0) m tall.
Stem leaves pinnately to bipinnately cut, glabrous, stalked, the segments lanceolate and sharp-toothed, 5-15 cm long.
Heads discoid, numerous in a compact spikelike inflorescence, short-stalked; involucres hemispheric, 2-3 mm tall; involucral bracts glabrous, the outer ones narrow and green, the inner with only a green midrib and broad, thin, dry, slightly papery margins; receptacles glabrous; female flowers fertile; disk flowers fertile.
Achenes 4-5-nerved, glabrous.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic streambanks and disturbed areas in the lowland, steppe and montane zones; infrequent in SC BC, rare elsewhere, absent from most of coastal and N BC; N to AK, E to PQ and NS and S to CA.

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

Additional Photo Sources

General References