Carruth's Sagewort

Artemisia carruthii is closely related to members of the A. ludoviciana complex, with which it may intergrade.

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.

Artemisia bakeri Greene; A. coloradensis Osterhout; A. kansana Britton; A. vulgaris Linnaeus subsp. wrightii (A. Gray) H. M. Hall & Clements; A. wrightii A. Gray

Artemisia wrightii A. Gray, Free. Am. Acad. 19: 48. 1883
A perennial, with a branched rootstock; stems mostly simple, 3-5 dm. high, sparingly floccose or glabrate, strict; leaves numerous, 1-4 cm. long, pinnatifid into 3-7 linear-filiform spreading revolute divisions, slightly pubescent and conspicuously punctate above, whitetomentose beneath; heads numerous in a leafy, often narrow panicle, erect; involucre campanulate, about 3 mm. high, 2 mm. broad; bracts 10-12, in 4 series, glabrate or sparingly floccose, the outer ovate, about one third as long as the inner; inner bracts elliptic, obtuse; ray-flowers 10-12; corollas 1 mm. long; disk-flowers about 10; corollas nearly 2 mm. long; achenes about 1 mm. long.
Type locality: "Plains of S. Colorado and New Mexico" [but the type was collected at Santa Rita del Cobre, New Mexico].
Distkibution: New Mexico and Arizona; (Colorado?).

Artemisia bakeri Greene, Fl. Baker. 3: 31. 1901
Artemisia mexicana Bakeri A. Nelson; Coult. & Nels. Man. 569. 1909.
A perennial, somewhat sufTruticose at the cespitosc base; stems branched, 3-6 dm. high, glabrous or nearly so, striate; leaves 2-5 cm. long, pinnately divided into 3-7 linear-filiform, divergent, revolute divisions, or the upper entire, glabrate and green above, finely whitetomentulose beneath; heads numerous in a leafy panicle, nodding; involucre hemispheric, about 3 ram. high and as broad; bracts about 10, in about 3 series, sparingly arachnoid, the outermost lanceolate, about half as long as the innermost; inner bracts elliptic, obtuse; rayflowers about 10; corollas 1 mm. long; disk-flowers about 10; corollas 1.5 mm. long.
Type ix>cality: Cafion of the Gunnison, near Cimarron, Colorado. Distribltion: Central Colorado and ea.stern Utah to Arizona and New Mexico.

Artemisia carruthii Wood; Carruth, Trans. Kans. Acad Sci. 5: 51. 1877.
Artemisia kansana Britton; Britt. & Brown, 111. Fl. 3: 466. 1898. Artemisia coloradensis Osterhout, Bull. Torrey Club 27: 506. 1900.
A perennial, with a cespitose rootstock; stems branched near the woody base, whitetomentose, 2-5 dm. high; leaves 2-5 cm. long, pinnatifid into 3-7 filiform or linear, revolute, spreading divisions, or the upper entire, white-tomentose on both sides; heads numerous in a leafy panicle; involucre campanulate, 2.5-3 mm. high, 2 mm. broad; bracts 10-12, in 3 series, white-tomentose, the outer lanceolate, half as long as the innermost; inner bracts oval, obtuse; ray-flowers 6-8; corollas 1.5 mm. long; disk-flowers 4-S; corollas nearly 2 mm. long; achenes 1 mm. long. {A. coloradensis is a form with somewhat broader leaf-segments.)
Type locality: Kansas.
Distribution: Missouri to Colorado, Arizona, and Texas.

Artemisia carruthii, common name Carruth's sagewort or Carruth wormwood, is a North American species of shrubs in the daisy family native to much of south-central and southwestern United States (Nevada, Arizona, New Mexico, Utah, Colorado, Kansas, Oklahoma, northern + western Texas). There are reports of a few naturalized populations in Missouri, the Great Lakes Region, and Rhode Island. It is also native to the States of Chihuahua and Sonora in northern Mexico.

Artemisia carruthii is an erect perennial herb up to 70 cm (28 inches) tall. It is faintly aromatic and covered with hairs. Flowers and yellow and nodding (hanging). It grows in grasslands as well as open and wooded areas.