Chelidonium L.
Perennial herbs with orange latex. Lvs pinnate, glabrous, green above, glaucous beneath; leaflets crenate. Fls few, in terminal or axillary umbels. Sepals 2, entire, free, falling as fl. opens, not horned. Petals 4, not crumpled in bud, yellow. Stigma 2-lobed; style short. Capsule 1-locular, dehiscing by 2 valves from below. Seeds irregularly obovate, with crested aril.
2 spp., Europe and N. Asia. Naturalised sp. 1.