Astragalus lentiformis A. Gray

Astragalus lentiformis A. Gray, Bot. Calif. 1: 156. 1876
Tragacantha lentiformis Kuntze, Rev. Gen. 946. 1891.
A perennial, with a woody root and cespitose caudex; stems many, prostrate, slender, terete, sparingly pubescent, 1-2 dm. long; leaves 1-4 cm. long, spreading; stipules deltoid, 2-3 mm. long, pilose; leaflets 1 1-15, rather crowded, obovate, or elliptic, rounded or retuse at the apex, villose-pilose, 3-8 mm. long; peduncles 1-1.5 cm. long; racemes short, few-flowered, reflexed; calyx pilose, the tube 2 mm. long and broad, the teeth subulate, 2 mm. long; corolla white, about 5 mm. long; banner obovate; wings shorter, the blade oblanceolate, falcate; keel-petals still shorter, the blade semi-orbicular, rounded at the apex; pod oblong, thinwalled, villous, somewhat compressed, 1 cm. long, 3 mm. wide and 2 mm. thick, slightly sulcate on the lower suture, oblong in cross-section, 5-6-seeded.
Type locality: Sierra Nevada, in Clover Valley. Distribution: Sierra County. California.

Perennial, Herbs, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules membranous or chartac eous, Stipules persistent, Stipules connate to each other, forming a tuber or sheath, Leaves compound, Leaves odd pinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 5-9, Leaflets 10-many, Leaves hairy on one or both surfaces, Inflorescences racemes, Inflorescence axillary, Bracts very small, absent or caducous, Flowers zygomorphic, Calyx 5-lobed, Calyx glabrous, Petals separate, Corolla papilionaceous, Petals clawed, Petals ochroleucous, cream colored, Petals orange or yellow, Banner petal narrow or oblanceolate, Wing petals narrow, oblanceolate to oblong, 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, Style persistent in fruit, Fruit a legume, Fruit freely dehiscent, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit beaked, Fruit hairy, Fruit 3-10 seeded, Seeds cordiform, mit-shaped, notched at one end, Seed surface smooth, Seeds olive, brown, or black.

Astragalus lentiformis is a species of milkvetch known by the common name lens-pod milkvetch. It is endemic to the Sierra Nevada in eastern Plumas County, California, where it grows in chaparral scrub and coniferous forests.