Richardson’s sagewort

Artemisia richardsoniana Besser, Bull. Soc. Imp. Naturalistes Moscou 9: 64. 1836, based on A. arctica Besser in W. J. Hooker, Fl. Bor.-Amer. 1: 323. 1833, not Lessing 1831; A. caudata Michaux var. richardsoniana (Besser) B. Boivin; A. desertorum Sprengel var. richardsoniana (Besser) Besser

Plants (6–)8–15(–20) cm, herbage white-hoary . Corollas (at least lobes) deep red, 3–3.5 mm.

Flowering mid–late summer. River terraces, tundra; 0–600 m; N.W.T., Nunavut, Yukon; Alaska.

Long overlooked, subsp. richardsoniana is easily distinguished by its relatively short stature, dense, white indument, and deep red corollas. It is known only from western arctic North America.