Astragalus bisulcatus, commonly called two-grooved milkvetch or silver-leafed milkvetch, is a leafy perennial with pea-like flowers. It is native to central and western North America, and typically grows on selenium-rich soils. It accumulates selenium within its tissues, and when livestock consume it, the selenium can be toxic.Astragalus bisulcatus is a herbaceous perennial with a thick woody root-stock, growing 30 to 100 cm tall. It has numerous simple stems and long pinnate leaves. The flowers are produced in narrow elongated racemes. The flowers are white or purple in color[ and bloom in late spring and early summer. The seed pods characteristically are two grooved on the upper surface. The fruits ripen and release their seeds in July and August.The seeds are dark brown or black, reniform in shape, 4 mm long and 2 mm wide.

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