Astragalus recurvus Greene

Tium recurvum (Greene) Rydberg
Astragalus recurvus Greene, Bull. Calif. Acad. 1: 155. 1885.
A perennial, with a woody taproot and short, cespitose caudex; stems sparingly strigose, 2-3 dm. high, often purplish; leaves 3-6 cm. long, spreading; leaflets 17-19, linear-oblong to obovate, 4—10 mm. long, 1-4 mm. wide, obtuse to retuse at the apex, glabrous above, sparingly strigose beneath; peduncles 4—8 cm. long; bracts lanceolate, 1-2 mm. long; pedicels 1-2 mm. long, recurved; calyx strigose, the tube 2 mm. long and broad, the teeth lance-subulate, 1 mm. long; corolla 5-6 mm. long, purple-tinged; banner obovate, strongly arched at the middle; wings of about the same length, the blade obovate, slightly falcate; keel-petals shorter, the blade broadly lunate; pod lunate, about 2 cm. long, 2.5-3 mm. wide, and 2 mm. thick, purpletinged, glabrous, the upper suture convex and acute, the lower concave and sulcate, the crosssection cordate, the septum 1 mm. wide.
Type locality: Mountains of northern Arizona.
Distribution: Arizona.

Perennial, Herbs, Stems woody below, or from woody crown or caudex, Plants with rhizomes or suckers, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Stems or young twigs sparsely to densely hairy, Leaves alternate, Leaves pet iolate, Stipules conspicuous, Stipules membranous or chartaceous, 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 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 hairy, Petals separate, Corolla papilionaceous, Petals clawed, Petals white, Petals pinkish to rose, Petals blue, lavander to purple, or violet, 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 strongly curved, falcate, bent, or lunat e, Fruit or valves persistent on stem, Fruit exserted from calyx, Fruit beaked, Fruit glabrous or glabrate, Fruit hairy, Fruit 11-many seeded, Seeds cordiform, mit-shaped, notched at one end, Seed surface smooth, Seeds olive, brown, or black.

Astragalus recurvus adalah spesies tumbuhan yang tergolong ke dalam famili Fabaceae. Spesies ini juga merupakan bagian dari ordo Fabales. Spesies Astragalus recurvus sendiri merupakan bagian dari genus Astragalus. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Greene.

Astragalus recurvus là một loài thực vật có hoa trong họ Đậu. Loài này được Greene miêu tả khoa học đầu tiên.