Dalea brachystachya A. Gray

Parosela lemmoni (Parry) A. Heller, Cat. N. Am. PI ed. 2. 6. 1900.
Dalea Lemmoni Parry; A. Gray, Proc. Am. Acad. 17: 200. 1882.
A slender annual or perennial, branched at the base; stem 1-3 dm. high, branched, glarous; leaves 1-3 cm. long; stipules minute, subulate; petiole 1-3 mm. long; rachis glabrous, conspicuously glandular-dotted, margined; leaflets 5-11, linear to oblong-cuneate, 4—10 mm. long, acutish to retuse, glabrous on both sides, conspicuously glandular-dotted beneath; peduncles terminal or opposite the leaves, 2-6 cm. long; spikes globose or ovoid, about 1 cm. long; bracts lanceolate, acuminate, conspicuously glandular-dotted and glabrous on the back, ciliate on the margins; calyx-tube turbinate, 10-ribbed, silky-hirsute, 2 mm. long; lobes subulate-attenuate, longer than the tube; corolla rose-colored; blade of the banner deltoid-cordate, 2 mm. long, the claw 3 mm. long; blades of the wings obliquely elliptic or obovate, with a rounded basal lobe, 3-3.5 mm. long, those of the keel-petals broadly obovate, with a smaller basal lobe, 3.5-4 mm. long, the claws of both 2 mm. long; pod silky-villous.
Type locality: Near Fort Bowie, Apache Pass. Arizona. Distribution: Arizona and Chihuahua to Puebla.

Annual, Herbs, Taproot present, Nodules present, Stems erect or ascending, Stems less than 1 m tall, Plants gland-dotted or with gland-tipped hairs, Stems solid, Stems or young twigs glabrous or sparsely glabrate, 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, Leaflets 10-many, Leaves glandular punctate or gland-dotted, Leaves glabrous or nearly so, Inflorescences spikes or spike-like, Inflorescences globose heads, capitate or subcapitate, Inflorescence terminal, Bracts conspicuously present, Bracts hairy, Bracteoles present, Calyx 5-lobed, Calyx hairy, Petals separate, Corolla papilionaceous, Peta ls clawed, Petals orange 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 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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