Premise: Astragalus montii is a rare species of flowering plant in the legume family known by the common name heliotrope milkvetch. It is endemic to Utah in the United States, where there are only three known populations. It is a federally listed threatened species of the United States. This species is often treated as a variety of "Astragalus limnocharis".
Hypothesis: Astragalus montii was introduced to Utah by England