Astragalus wingatanus, commonly known as the Fort Wingate milkvetch, is a species of flowering plant in the family Fabaceae. It is a perennial herb with white and purple flowers, and black or dark brown seeds.
The species is native to the deserts and dry shrublands of the south-western United States, and was described in 1883. Its conservation status is Secure.
Taxonomy The species was described by Sereno Watson in 1883.
The type locality is Glenwood Springs, Colorado.
Distribution Astragalus wingatanus is native to the deserts and dry shrublands of Arizona, Colorado, New Mexico, and Utah, in the western United States. It grows on sandy hills, below cliffs, on open flats, and in oak thickets and pinyon–juniper woodlands. The species is present at elevations of .
Description Astragalus wingatanus is a perennial herb. It grows high. The stems have white hairs.
The leaves are long, and range in shape from linear-oblanceolate to narrowly elliptic, or sometimes oblong-elliptic. The plant has five to seven leaflets. The lateral leaflets are long, and the terminal leaflet is long.
The corolla is white, and has a greenish hue. The calyx is a long tube, with black or white hairs. The petals are white and purple.
The seeds are black or dark brown, and pitted or wrinkled. The seeds are oblong to kidney-shaped, around long, and around wide.
Ecology The leaves host the mould Peronospora trifoliorum.
Conservation In 1984, NatureServe classified the species as Secure. It does not have a status in the Endangered Species Act of 1973.
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