Polar Milk Vetch

Homalobus ambiyodon (Kearney) Rydberg, sp. nov
Astragalus amblyodon Kearney, MS.
A cespitose perennial; stems less than 1 dm. long, decumbent or prostrate; leaves 1-2.5 cm. long, spreading; stipules mostly connate, broadly deltoid, 2-3 mm. long; leaflets 5-13, oval or obovate, retuse at the apex, 3-5 mm. long, glabrous above, sparingly strigose, especially along the midrib and margins beneath; peduncles 1.5-3 cm. long; racemes few-flowered, very short; bracts ovate, 1-2 mm. long, ciliate on the margins; calyx black-hairy, the tube 3 mm. long, 2 mm. broad, the teeth deltoid, obtuse, 1 mm. long; corolla purple, 10-12 mm. long; banner broadly obovate, notched at the apex; wings S-10 mm. long, the blade broadly obliquely oblanceolate, somewhat falcate, with a reflexed auricle; keel-petals slightly shorter, similar but broader; mature pod not seen; young pod 1-celled, black-hairy, neither suture reflexed, with a flat beak.
Type collected at Stepovak Bav, Alaska Peninsula, Alaska, Julv 8-19, 1899, Charles Palache (U. S. Nat. Herb. 375154).
Distribution: Known only from the type locality.