American Bird's-Foot Trefoil (Acmispon americanus (Nutt.) Rydb.)
Also classified as Lotus unifoliolatus (Hook.) Benth.
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↑Range - Expand
| Legend | Color |
| Native | |
| Expanded | |
| Native or Not Present | |
| Native or Expanded | |
| Expanded or Not Present | |
| Native or Expanded or Not Present |
This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.
Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.
Note that although the range map shows a native population in the Appalachians, this is Acmispon americanus var. helleri, an uncommon variety which is not expanding into new areas; new populations consist of the more abundant, Western Acmispon americanus var. americanus spreading eastward. We mark it as expanded even though the populations consist of isolated populations, because this is a small weedy plant that is not generally cultivated, and there are enough new populations to see a pattern of spread.
