American Hogpeanut

Annual, Herbs, Vines, twining, climbing, Taproot present, Nodules present, Stems less than 1 m tall, Stems 1-2 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Stems or young twigs sparsely to densely hairy, Stem hairs hispid to villous, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules membranous or chartaceous, Stipules persistent, Stipules free, Leaves compound, Leaves pinnately 3-foliolate, Leaf or leaflet margins entire, Stipels present at base of leaflets, Leaves hairy on one or both surfaces, Inflorescences racemes, Inflorescence axillary, Bracts very small, absent or caducous, Bracts hairy, Brac teoles present, Flowers zygomorphic, Calyx 4-lobed, Calyx hairy, Petals separate, Corolla papilionaceous, Petals clawed, Petals white, Banner petal ovoid or obovate, Wing petals narrow, oblanceolate to oblong, Wing petals auriculate, Wing tips obtuse or rounded, Keel petals auriculate, spurred, or gibbous, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Reduced cleistogamous flowers produced, Fruit a legume, Fruit stipitate, Fruit unilocular, Fruit subterranean, Fruit freely dehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit explosively or elastically dehiscent, Fruit hairy, Fruit 1-seeded, Fruit 2-seeded, Fruit 3-10 seeded, Seeds ovoid to rounded in outline, Seed surface smooth, Seeds olive, brown, or black.