Jicama

Perennial, Vines, twining, climbing, Woody throughout, Nodules present, Stems or branches arching, spreading or decumbent, Stems greater than 2 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Stem hairs hispid to villous, Leaves alternate, Leaves petiolate, Stipules inconspicuous, absent, or caducous, Stipules membranous or chartaceous, Leaves compound, Leaves pinnately 3-foliolate, Leaf or leaflet margins entire, Leaflets opposite, Stipels present at base of leaflets, Leaflets 3, Leaves hairy on one or both surfaces, Flowers in axillary clusters or few-floweredracemes, 2-6 flowers, Inflorescences racemes, Inflorescence sessile or subsessile, Inflorescence axillary, Bracts very small, absent or caducous, Bracteoles present, Flowers sessile or nearly so, Flowers zygomorphic, Calyx 5-lobed, Calyx 2-lipped or 2-lobed, Calyx hairy, Petals separate, Corolla papilionaceous, Petals blue, lavander to purple, or violet, Banner petal ovoid or obovate, Banner petal auriculate, Wing petals narrow, oblanceolate to oblong, 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, Fruit a legume, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit internally septate between the seeds, Fruit explosively or elastically dehiscent, Fruit hairy, Fruit 3-10 seeded, Seed surface smooth, Seeds olive, brown, or black.

Calopogonium caeruleum là một loài thực vật có hoa trong họ Đậu. Loài này được (Benth.) Sauvalle miêu tả khoa học đầu tiên.