Montana Field Guide

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 et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Meadows, thickets, often along streams; plains, valleys to subalpine (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

POLLINATORS
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).