Perennials, 30-90 cm (densely cespitose), mildly aromatic (caudices branched, woody, taprooted). Stems 1-9, erect, gray-green, lanate. Leaves mostly basal (in rosettes, cauline 2-5, scattered on flowering stems); blades (basal) broadly oblanceolate, 0.5-0.8 × 0.5-0.7 cm, relatively deeply lobed (lobes 3-5, acute; cauline blades 0.5-1 cm, entire or pinnately lobed, lobes 3-5), faces densely tomentose to sericeous (hairs 1-2 mm). Heads in corymbiform arrays 0.5-2.5 × 0.5-2.5 cm (subtended by white-sericeous bracts). Involucres turbinate, 3-4 × 3-5 mm. Phyllaries lanceolate or ovate, hairy. Florets: pistillate 4-5; bisexual 3-4; corollas yellow or tan, 1.5-2, glandular (style branches blunt, not fringed). Cypselae (brown) linear-oblong, ca. 2 mm, (apices flat), glabrous. 2n = 36, 54.

Flowering mid-late summer. Open calcareous gravelly slopes in tundra or heath, sandy slopes above high tide; 0-600 m; Alaska; e Asia (Russian Far East, Chukotka).

Artemisia senjavinensis is known only from western Alaska (Seward Peninsula) and the Chukchi Peninsula of the Russian Far East.