Artemisia biennis Willd.
biennial wormwood
Asteraceae (Aster family)

Introduction to Vascular Plants


© Jamie Fenneman     (Photo ID #19668)


E-Flora BC Static Map

Distribution of Artemisia biennis
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Species Information

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.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and 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.

SourceThe Illustrated Flora of British Columbia