Sixweeks Prairie Clover

Parosela polygonoides (A. Gray) A. Heller, Cat. N. Am. PI ed. 2. 6. 1900.
Dalea polygonoides A. Gray, PI. Wright. 2: 39. 1S53.
A slender annual; stem 1-2 dm. high, erect, branched, glabrous; leaves 2-3 cm. long; stipules subulate, 2 mm. long; petiole 5-10 mm. long; rachis glabrous, slightly glandulardotted; leaflets 3-9, broadly linear or linear-oblong, 6-15 mm. long, glabrous on both sides, sparingly glandular-dotted beneath; peduncles terminating the branches, 3-8 cm. long; spikes dense, 1-2 cm. long; bracts ovate or obovate, acuminate, equaling the calyx, persistent, darkcolored, with a few large glands, ciliate; calyx-tube narrowly turbinate, somewhat extended by the fruit, silky-villous, 1.5 mm. long, 10-ribbed; lobes subulate, acuminate, about equaling the tube; corolla bluish, pinkish, or white; blade of the banner about 1 mm. long, roundedovate, truncate or subcordate at base, slightly longer than the claw; wings and keel-petals inserted at the middle of the staminal tube, the blades obliquely oval, with a rounded basal lobe, about 1 mm. long, those of the keel-petals united along tKilower edge, the claws 1 mm. long; pod villous, obliquely obovate, equaling the calyx.
Type locality: Copper Mines [Santa Rita del Cobre], New Mexico. Distribution: New Mexico, Arizona, and Chihuahua.

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, Leaves glandular punctate or gland-dotted, Leaves glabrous or nearly so, Inflorescences spikes or spike- like, Inflorescence terminal, Bracts conspicuously present, Bracteoles present, Calyx 5-lobed, Calyx hairy, Petals separate, Corolla papilionaceous, Petals clawed, Petals blue, lavander to purple, or violet, 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, Fertile stamens 6-8, 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.