Artemisia ludoviciana subsp. albula (Wooton) D.D.Keck

Stems 30–80 cm, widely branched, tomentose or glabrous. Leaves uniformly whitish green; blades lance-linear (and entire), or obovate to elliptic (with antrorse teeth or lobes to 1/3 blade lengths, usually 1–2 cm, margins revolute), faces ± tomentose. Heads in open, paniculiform arrays (9–)15–40 × (4–)8–30 cm. Involucres 1–2 × 2–3 mm. Florets: pistillate 8–11; bisexual 8–13; corollas 1–1.5 mm.