Montana Field Guide

Taprooted annual to biennial. Stems prostrate to ascending, 3–30 cm long, branched with racemes terminal and from upper leaf axils. Leaves basal and cauline; the basal withering early; stem leaves oblanceolate, 1–5 cm long, pinnately lobed to deeply dentate, the terminal lobe largest. Vestiture of sparse, recurved hair on the stem. Petals yellow, 0.6–1.1 mm long, shorter than the sepals. Fruit a linear silique, 7–17 mm long, 0.8–1.5 mm wide, usually hispid on the sutures; style 0.1–0.4 mm long; pedicels spreading to ascending, 1–3 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Mud along shores of lakes, ponds, streams; montane, 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 rufocinctus (Thorp et al. 1983).