Astragalus altus Woot. & Standl.

Atelophragma altum (Wooton & Standley) Rydb. Bull. Toney Club 55: 161. 1928.
Astragalus alius Wooton & Standley, Contr. U. S. Nat. Herb. 16: 136. 1913.
A perennial; stems several, slender, erect, sparingly strigose, branched, 4-6 dm. high; leaves 8-10 cm. long, ascending; stipules deltoid-lanceolate, acuminate; leaflets 21-29, elliptic to oblong, 8-10 mm. long, obtuse or acute, glabrous above, strigose beneath; peduncles 5-S cm. long; racemes 2-6 cm. long; bracts lanceolate, 1-2 mm. long; pedicels 1 mm. long; calyx yellowish, sparsely black-strigulose, 4 mm. long, the teeth deltoid, 1 mm. long; corolla ochroleucous or yellow, 9-10 mm. long; banner obovate, moderately arched; wings nearly as long, the blade oblanceolate, with a reflexed auricle; keel-petals much shorter, the blade broadly obovate, rounded at the apex; pod black-strigulose, the stipe 6 mm. long, the body lance-oblong or ob-

Perennial, Herbs, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems erect or ascending, Stems less than 1 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Stems with 2-branched hairs, dolabriform, Leaves alter nate, Leaves petiolate, Stipules conspicuous, Stipules membranous or chartaceous, Stipules persistent, Stipules free, 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 ochroleucous, cream colored, 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 stipitate, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, 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 altus adalah spesies tumbuhan yang tergolong ke dalam famili Fabaceae. Spesies ini juga merupakan bagian dari ordo Fabales. Spesies Astragalus altus sendiri merupakan bagian dari genus Astragalus. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Wooton & Standl..

Astragalus altus là một loài thực vật có hoa trong họ Đậu. Loài này được Wooton & Standl. miêu tả khoa học đầu tiên.