Blackspot Hornpoppy - Glaucium corniculatum
Annual or biennial with white-hairy foliage and yellow sap. Stems branched, to 50 cm. Leaves oblanceolate, deeply pinnately lobed, to 15 cm long; the upper ovate and clasping. Flowers solitary, long-stalked in upper leaf axils; sepals 2, 15–30 mm long; petals 4, orange to red with a black base, 20–35 mm long; stamens many. Capsules ascending, linear, slightly curved, 12–20 cm long, pubescent (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
Weedy areas such as agricultural fields.