Artemisia cana subsp. cana

Common names: Silver wormwood
Synonyms: Artemisia columbiensis Nuttall
Treatment appears in FNA Volume 19. Treatment on page 513. Mentioned on page 512.
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Illustrator: Linda Ann Vorobik
Shrubs, 100–150 cm. Stems white to light gray or brown. Leaves whitish gray, blades narrowly elliptic to lanceolate, 2–8 × 0.3–1 cm, usually entire, sometimes irregularly lobed, densely silvery-canescent. Heads in (leafy) arrays 10–20 × 5–7 cm. Involucres broadly campanulate, 3–4 × 3–5 mm. Phyllaries broadly ovate (mostly obtuse), densely hairy. Florets 10–20. Cypselae 1–1.2 mm. 2n = 54.

Phenology: Flowering mid–late summer.
Habitat: Sandy loam soils, often along streams
Elevation: 1000–1500 m



Alta., B.C., Man., Sask., Colo., Mont., Nebr., N.Dak., S.Dak., Wyo.


Subspecies cana is found primarily in the grasslands of Canada and the west-central United States. It is unusual within the species in that there is no morphologic evidence of hybridization with other species in subg. Tridentatae.



Lower Taxa

No lower taxa listed.