Montana Field Guide

Taprooted annual. Stems simple or branched, 30–80 cm. Herbage glabrate but stems and inflorescences glandular-pubescent. Leaves basal and cauline, petiolate; blades lanceolate, 5–8 cm long, becoming short-petiolate, narrower up the stem. Inflorescence axillary, few-flowered cymes and a terminal panicle. Flowers narrowly funnel-form; calyx 5–7 mm long, teeth unequal and shorter than the tube; corolla white, 2–3 cm long, the limb 10–14 mm wide. Fruit a 4-valved, ovoid capsule, 8–12 mm long, mostly enclosed in the pustulate calyx (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Sandy or gravelly soil of stream banks, railroad tracks; valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).