Annual herbs. Stems 15–30 cm. Leaves to 8 cm long. Flowers spreading to ascending, 5–6 mm long; petals pink, purple toward the tip. Capsules wrinkled or pitted, ca. 2 mm long (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Central and southern mountains and eastern plains in MT, also in the Dakotas; native to Europe (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).