| Shivwits milkvetch | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Astragalus |
| Species: | A. ampullarioides |
| Binomial name | |
| Astragalus ampullarioides | |
Astragalus ampullarioides is a rare species of milkvetch known by the common name Shivwits milkvetch. It was previously classified as a variety of Astragalus eremiticus. [2] It is endemic to Washington County, Utah, where it is known from only seven populations. [2] Estimates of the total number of individuals range from 1000 [1] to 4200. [3] The species occurs in desert scrub and woodlands on the Chinle Formation. [4] It is a federally listed endangered species. [5]
This is a perennial herb growing erect to a maximum height near half a meter. It produces about 45 flowers on an erect inflorescence. [4] It is pollinated by bees. [2]
Much of the plant's range is within the bounds of Zion National Park and Shivwits tribal lands. [4] Other parts of the range are unprotected. Threats to the species include habitat loss to development and agriculture, herbivory by rabbits, cattle grazing, off-road vehicles, quarrying, and introduced plant species. [1] [4]
