Astragalus hartmanii Rydb.

Astragalus hartmanii Rydberg, sp. nov
Astragalus giganteus yaquianus M. E. Jones, Rev. Astrag. 234, in part (as to description and specimen). 1923.
A perennial; stem 1 m. high or more, finely short-villous; leaves 2-3 dm. long, ascending; stipules herbaceous, deltoid, acuminate, 1-1.5 cm. long; leaflets about 25, oval, 2.5-5 cm. long, obtuse, silky on both sides, but glabrate in age; peduncles 1.5 dm. long or more; racemes about 1 dm. long; bracts subulate, about 1 cm. long; pedicels about 5 mm. long; calyx sparingly silky, the tube about 1.5 cm. long, the teeth about 1 cm. long, subulate; corolla ochroleucous, 3.5-4 cm. long; banner narrowly obovate, only slightly arcuate, the margins reflexed; wings shorter, the claw much exceeding the calyx-tube, the blade linear-oblong, nearly straight, with a large basal auricle; keel-petals rather narrow, oblong-lunate, only slightly arcuate towards the apex, obtuse; ovary glabrous; pod unknown.
Type collected near San Diego Ranch, Chihuahua, Harlman 67 S (herb. N. Y. Bot. Gard.).
Distribution: Known only from the type locality.