Herbaceous perennial. Stems erect, 4-angled, 40–150 cm, usually simple. Herbage glandular-puberulent, glaucous. Leaves cauline, opposite, petiolate; blades lanceolate to deltoid, 5–13 cm long, serrate. Inflorescence a minute-bracteate panicle of cymes, opposite below, alternate above. Flowers: calyx cup-like, 2–3 mm long, deeply and unequally 5-lobed into rounded, erose segments; corolla reddish-brown, ovoid, 7–10 mm long, bilabiate, upper lip 2-lobed, lower lip shorter; stamens 5, 4 fertile; staminode flattened, without a filament; stigma capitate. Capsule ovoid, 5–10 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans
and Bombus impatiens
(Colla and Dumesh 2010).