Longflower Rabbitbrush

Shrubs, 10–50 cm; woody, highly branched caudices, proximal branches decumbent, bark tan to gray, flaky with age. Stems green, becoming whitish tan, ± ridged from leaf bases, densely puberulent. Leaves erect or closely ascending; sessile; blades with evident midnerves, linear to oblanceolate or narrowly oblong, 7–30 × 1.5–7 mm, flat to keeled, apices acute (often apiculate), faces glabrous or puberulent, sometimes sparsely stipitate-glandular. Heads in densely cymiform arrays, not overtopped by distal leaves. Involucres obconic, 9–15 × 3–5 mm. Phyllaries 20–25 in 4–6 series, in 5 strong vertical ranks, tan, often with green and/or purplish markings, midnerves evident throughout and ± expanded apically, lanceolate to elliptic, 3–8 × 0.5–1.5 mm, unequal, outer often herbaceous, inner scarious, strongly keeled, apices acute to acuminate, flat, faces puberulent. Disc florets 5–6; corollas 7–11 mm, lobes 1–2.1 mm; style branches 2.4–3.3 mm, appendages 1.5–2 mm. Cypselae tan, subcylindric (tapering proximally), ± flattened, 5–6.5 mm, faces glabrous, sparsely glandular distally; pappi whitish tan, 5.5–7.5 mm. 2n = 18.

Chrysothamnus depressus called long-flowered rabbitbrush, is a North American species of flowering plants in the tribe Astereae within the family Asteraceae. It is native to the southwestern United States, the States of California, Arizona, New Mexico, Nevada, Utah, and Colorado. It grows in dry canyons, rocky crevices and similar habitats in the Mohave Desert, the Colorado Plateau, etc.

Chrysothamnus depressus is a branching shrub up to 50 cm (20 inches) tall. It produces large, dense arrays of small yellow flower heads, each with disc florets but no ray florets.