Celandine - Chelidonium majus
Other Names:
Greater Celandine, Tetterwort, Nipplewort, Swallowwort
Biennial or short-lived perennial with yellow sap, hairy below, glabrous above. Stems to 70 cm, branched. Leaves petiolate, ovate, to 25 cm long, deeply lobed with toothed margins. Inflorescence long-stalked umbels from upper leaf axils. Flowers yellow, the pedicels to 4 cm long in fruit; sepals 2, petals 4, 5–10 mm long; stamens at least12. Capsules erect, linear, glabrous, 2–8 cm long (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).