1. Roemeria hybrida (Linnaeus) Candolle, Syst. Nat. 2: 92. 1821.
紫花疆罂粟 zi hua jiang ying su
Chelidonium hybridum Linnaeus, Sp. Pl. 1: 506. 1753; Glaucium violaceum Jussieu; Roemeria violacea (Jussieu) Medikus, nom. superfl.
Herbs, annual, 10-50 cm tall. Stems erect, terete, few branched, nearly glabrous. Basal leaves several, glabrous or slightly bristly; petiole long, basally with inflated sheath; blade ovate, bipinnatilobate to tripinnatilobate; lobules linear, apex acute or almost acute, rarely obtuse. Cauline leaves similar to basal leaves, but smaller and shortly petiolate to almost sessile. Flowers solitary, terminal or axillary, short-lived, petals generally dropping by afternoon. Pedicel 5-7.5 cm. Flower buds oblong-ovoid, ca. 1 cm, outside pubescent, apically rounded. Sepals caducous, ovate, pubescent. Petals purple, broadly ovate to suborbicular, 1.5-3 cm. Stamens numerous; filaments deep purple; anthers yellow. Ovary terete; styles short; stigmas capitate, 4-lobed, lobes suborbicular. Capsule narrowly terete, 5-10 cm, only apically sparsely setaceous, when mature usually 4-valvate from apex to base. Seeds many, reniform, adaxially alveolate. 2n = 22, 24.
Dry slopes, sands, grasslands, fallow and cultivated lands. Xinjiang [NW Africa, C and SW Asia, S Europe].