Amsonia is a genus of flowering plants in the dogbane family, Apocynaceae, first described as a genus in 1788. It is native primarily to North America with one species in East Asia and another in the eastern Mediterranean. It was named in honor of the American physician John Amson. Members of the genus are commonly known as bluestars.
SpeciesAmsonia ciliata Walter – fringed bluestar – SE US, S Great Plains
Amsonia elliptica (Thunb. ex Murray) Roem. & Schult. – Japanese bluestar – China, Japan, Korea ...
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