Pomaria jamesii (Torr. & A. Gray) Walp.

Larrea jamesii (T. & G.) Britton
Hoffmanseggia Jamesii T. & G. Fl. N. Am. 1 : 393. 1840.
Pomaria Jamesii Walp. Rep. 1: 811. 1842.
Hoffmanseggia Jamesii Popenoensis E. M. Fisher. Contr. U. S. Nat. Herb. 1: 150. 1892.
Caesalpinia Jamesii E. M. Fisher. Bot. Gaz. 18: 123. 1893.
Herbaceous or suffrutescent, with a woody spindle-shaped root 1-4 dm. long; stems 2-4 dm. high, appressed-canescent and glandular. Stipules linear, entire, 2-3 mm. long, caducous; pinnae 5-7; leaflets 4-10 pairs, ovate to short-oblong, 4-5 mm. long, canescent or glabrate above, canescent and black-glandular-dotted beneath; racemes lateral, 5-10 cm. long, 5-15flowered; calyx-lobes linear-lanceolate, acute, pubescent and black-glandular; petals glandular, a little longer than the calyx; stamens shorter than the calyx; legume 2-2.5 cm. long, lunate, 2or 3-seeded, cuneate at base, acute, black-dotted and with tufts of stellate hairs.
Type loc.lity: .Sources of the Canadian River [New Mexico). Distribution: Kansas to Texas, Colorado, Arizona, and California.

Perennial, Herbs, Stems woody below, or from woody crown or caudex, Taproot present, Stems or branches arching, spreading or decumbent, Stems prostrate, trailing, or mat forming, Stems less than 1 m tall, Plants gland-dotted or with gland-tipped hairs, Stems solid, Stems or young twigs sparsely to densely hairy, L eaves alternate, Leaves petiolate, Stipules conspicuous, Stipules green, triangulate to lanceolate or foliaceous, Stipules persistent, Stipules free, Leaves compound, Leaves odd pinnate, Leaves bipinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves glandular punctate or gland-dotted, Leaves hairy on one or both surfaces, Inflorescences racemes, Inflorescence axillary, Inflorescence terminal, Inflorescence leaf-opposed, Bracts very small, absent or caducous, Flowers zygomorphic, Calyx 5-lobed, Calyx gland-dotted or with glandular spot, Calyx hairy, Petals separate, Petals clawed, Petals orange or yellow, Petals bicolored or with red, purple or yellow streaks or spots, Stamens 9-10, Stamens heteromorphic, graded in size, Filaments hairy, villous, Style terete, Fruit a legume, Fruit unilocular, Fruit freely dehiscent, Fruit oblong or ellipsoidal, Fruit strongly curved, falcate, bent, or lunate, Fruit exserted from calyx, Fruit hairy, Fruit gland- dotted or with gland-tipped hairs, Fruit 2-seeded, Seeds ovoid to rounded in outline, Seed surface smooth, Seeds olive, brown, or black.

Pomaria jamesii (common name James' holdback), is a plant found in the American southwest.

Pomaria jamesii là một loài thực vật có hoa trong họ Đậu. Loài này được (Torr. & A.Gray) Walp. miêu tả khoa học đầu tiên.