familyAsteraceae
genusArtemisia
subgenusArtemisia subg. Drancunculus
speciesArtemisia campestris
subspeciesArtemisia campestris subsp. pacifica
Artemisia campestris subsp. pacifica
Publ. Carnegie Inst. Wash. 326: 122. 1923.
Common names: Western sagewort
Endemic
Basionym: Artemisia pacifica Nuttall Trans. Amer. Philos. Soc., n. s. 7: 401. 1841
Synonyms: Artemisia campestris var. petiolata S. L. Welsh Artemisia campestris var. scouleriana (Besser) Cronquist Artemisia desertorum var. scouleriana Besser Oligosporus campestris subsp. pacificus (Nuttall) W. A. Weber Oligosporus pacificus
Perennials, 30–100 cm. Stems 2–5. Leaves: basal rosettes persistent (faces green and glabrous or gray-green and sparsely hairy). Heads in arrays 10–22 × 1–3(–7) cm. Involucres turbinate, 2–3 × 2(–3) mm.
Phenology: Flowering mid–late summer.
Habitat: Sandy soils, arid regions
Elevation: 100–2500 m
Distribution
Alta., B.C., Man., Sask., Alaska, Ariz., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., Oreg., Tex., Utah, Wash., Wyo.
Discussion
Throughout western North America, members of the Artemisia campestris complex can be assigned to subsp. pacifica. Although morphologically distinct through much of its range, subsp. pacifica may intergrade with subsp. canadensis and A. borealis in areas where their ranges overlap.
Selected References
None.
Lower Taxa
None.