Flora of North America species comparison

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Artemisia cana subsp. cana
Photo is of parent taxon

silver wormwood
Habit 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.
Involucres

broadly campanulate, 3–4 × 3–5 mm.
Florets

10–20.
Phyllaries

broadly ovate (mostly obtuse), densely hairy.
Heads

in (leafy) arrays 10–20 × 5–7 cm.
Cypselae

1–1.2 mm.
2n

= 54.

Artemisia cana subsp. cana
Phenology Flowering mid–late summer.
Habitat Sandy loam soils, often along streams
Elevation 1000–1500 m (3300–4900 ft)
Distribution
from FNA
CO; MT; ND; NE; SD; WY; AB; BC; MB; SK
[BONAP county map]
Discussion

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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 513.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Tridentatae > Artemisia cana
Sibling taxa
A. cana subsp. bolanderi, A. cana subsp. viscidula
Synonyms A. columbiensis
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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