Rhizomatous perennial. Stems erect, 30–60 cm, puberulent, woody at the base. Leaves subsessile, narrowly lanceolate, 1–3 cm long, entire. Inflorescence of congested verticillasters in axils of leaf-like bracts. Flowers: calyx 6–8 mm long, 15-nerved, the lobes ca. half as long as tube; corolla deep blue, ca. 1 cm long, bilabiate, lower lip longer; stamens 4 (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).