Artemisia carruthii
Trans. Kansas Acad. Sci. 5: 51. 1877.
Perennials, 15–40(–70) cm, faintly aromatic (rhizomatous). Stems mostly 3–8, ascending, brown to gray-green, simple (bases curved, somewhat woody), sparsely to densely tomentose. Leaves cauline, bicolor (± gray-green); blades narrowly elliptic, 0.1–2.5(–3) × 0.5–1 cm (gradually smaller distally), relatively deeply pinnatifid (lobes 3–5), faces densely tomentose (abaxial) to sparsely hairy (adaxial). Heads (usually nodding) in (leafy) paniculiform arrays 10–30 × 3–9 cm (branches erect). Involucres campanulate, 2–2.5(–3) × 1.5–3 mm. Phyllaries lanceolate, gray-tomentose. Florets: pistillate 1–5; bisexual 7–25; corollas pale yellow, 1–2 mm, glandular-pubescent. Cypselae (light brown) cylindro-elliptic, ca. 0.5 mm, (curved at summits, scarcely nerved), glabrous (shining). 2n = 18.
Phenology: Flowering mid summer–early fall.
Habitat: Open sites, usually sandy soils, wooded areas, grasslands, railroads
Elevation: 600–2900 m
Distribution
Ariz., Colo., Kans., Mich., Mo., N.Mex., Okla., Tex., Utah, Mexico (Chihuahua, Sonora).
Discussion
Artemisia carruthii is closely related to members of the A. ludoviciana complex, with which it may intergrade.
Selected References
None.