Dalea nana A. Gray

Parosela nana (Torr.) A. Heller, Bot. Expl Texas 49. 1895.
Dalea nana Torr.; A. Gray, Mem. Am. Acad. II. 4: 31. 1849.
A perennial herb, branched at the base; stems 1-2 dm. high, decumbent at the base or ascending, silky-canescent; leaves many, spreading, 2-3 cm. long; stipules subulate-setaceous, 3-4 mm. long; petiole 4-S mm. long; rachis silky-canescent; leaflets obovate, 5-15 mm. long, sericeous on both sides; peduncles opposite the leaves and at the ends of the branches, 0.5-2 cm. long; spikes oblong, dense, 1-3 cm. long, about 1 cm. thick; bracts ovate, short-acuminate, pubescent, about equaling the calyx; calyx-tube turbinate, 10-angled, 3 mm. long, sericeous; lobes filiform from a broad base, longer than the tube; corolla yellow, fading rose-colored; blade of the banner reniform, 2 mm. long, 3.5 mm. wide, the claw 3 mm. long; blades of the other petals 3-3.5 mm. long, those of the keel-petals slightly larger than those of the wings, the claws 1 mm. long; pod villous.
Type locality: Willow Bar. on the Cimarron. Distribution: Kansas to Arizona and San Luis Potosi.

Perennial, Herbs, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Plants gland-dotted or with gland-tipped hairs, Stems solid, Stems or young twigs sparsely to densely hairy, Stems hairs pilose or spreading, Leaves alternate, Leaves petiolate, Stipules inconspicuous, absent, or caducous, Stipules setiform, subulate or acicular, Stipules deciduous, Stipules free, Leaves compound, Leaves odd pinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 5-9, Leaves glandular punctate or gland-dotted, Leaves hairy on one or both surfaces, Inflorescences spikes or spike-like, Inflorescence terminal, Bracts conspicuously present, Bracteoles present, Calyx 5-lobed, Calyx gland-dotted or with glandular spot, Calyx hairy, Petals separate, Corolla papilionaceous, Petals clawed, Petals oran ge or yellow, Banner petal narrow or oblanceolate, Banner petal ovoid or obovate, Wing petals narrow, oblanceolate to oblong, Wing tips obtuse or rounded, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens monadelphous, united below, Filaments glabrous, Style terete, Fruit a legume, Fruit unilocular, Fruit indehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit enclosed in calyx, Fruit glabrous or glabrate, Fruit hairy, Fruit 1-seeded, Seeds reniform, Seeds cordiform, mit-shaped, notched at one end, Seed surface smooth, Seeds olive, brown, or black.

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