Montana Field Guide

Perennial, spreading by horizontal roots or stolons. Stems erect to ascending, 40–80 cm. Leaves basal and cauline; the basal rosette present only the first year; stem leaves 3–11 cm long, oblanceolate, strongly dentate, auriculate-clasping, sessile. Vestiture of sparse, simple hairs below, glabrous above. Petals yellow, 1–2 mm long. Fruit mostly sterile, ovoid silicles 1–2 mm long; the fertile ca. 3 mm long, glabrous; style 0.5–1 mm long; pedicels ascending, 7–10 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Roadsides, fields; valleys (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).

Useful Links:
Montana Invasive Species website
Montana Biological Weed Control Coordination Project
Montana Department of Agriculture - Noxious Weeds
Montana Weed Control Association
Montana Weed Control Association Contacts Webpage.
Montana Fish, Wildlife, and Parks - Noxious Weeds
Montana State University Integrated Pest Management Extension
Weed Publications at Montana State University Extension - MontGuides