Rhynchosia swartzii (Vail) Urb.

Perennial, Herbs, Vines, twining, climbing, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems 1-2 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules green, triangulate to lanceolate or foliaceous, Stipules deciduous, Stipules free, Leaves compound, Leaves pinnately 3-foliolate, Leaves odd pinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 3, Leaves glandular punctate or gland-dotted, Leaves hairy on one or both surfaces, Inflorescences racemes, Inflorescence axillary, Brac ts conspicuously present, Flowers zygomorphic, Calyx 5-lobed, Calyx gland-dotted or with glandular spot, Calyx hairy, Petals separate, Corolla papilionaceous, Petals orange or yellow, Banner petal ovoid or obovate, Wing petals narrow, oblanceolate to oblong, Wing petals auriculate, Wing tips obtuse or rounded, Keel abruptly curved, or spirally coiled, Keel tips obtuse or rounded, not beaked, Keel petals fused on sides or at tip, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Style hairy, Style persistent in fruit, Fruit a legume, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit strongly curved, falcate, bent, or lunate, Fruit exserted from calyx, Fruit beaked, Fruit hairy, Fruit 2-seeded, Seeds ovoid to rounded in outline, Seed surface smooth, Seeds red, or scarlet and black.

Rhynchosia swartzii là một loài thực vật có hoa trong họ Đậu. Loài này được (Vail) Urb. miêu tả khoa học đầu tiên.