Annual. Stems erect, branched above, 40–100 cm. Basal leaves lyrate-pinnate to lobed with dentate margins, early deciduous. Stem leaves reduced above, becoming ovate. Vestiture hirsute below to glabrous. Petals 6–9 mm long. Fruits: strictly erect; the body 8–15 mm long, strongly 2-nerved and angled; the beak 1–3 cm long, conical; pedicel ca. 2 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 rufocinctus
, Bombus sitkensis
, and Bombus occidentalis
(Thorp et al. 1983).