Amsonia
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
Amsonia fugatei S.P.McLaughlin – San Antonio bluestar – New Mexico
Amsonia grandiflora Alexander – Arizona bluestar – Arizona, Sonora, Durango
Amsonia hubrichtii Woodson – Hubricht's bluestar – Arkansas, Oklahoma
Amsonia illustris Woodson – Ozark bluestar – Mississippi Valley, also Nevada
Amsonia jonesii Woodson – Jones' bluestar – Arizona, New Mexico, Utah, Colorado
Amsonia kearneyana Woodson – Kearney's bluestar – Baboquivari in Pima Co. in Arizona
Amsonia longiflora Torr. – tubular bluestar – Arizona, New Mexico, Texas, Coahuila
Amsonia ludoviciana Vail – Louisiana bluestar – Louisiana, Mississippi, Georgia
Amsonia orientalis Decne. – European bluestar – Greece, Turkey
Amsonia palmeri A.Gray – Palmer's bluestar – Arizona, New Mexico, Texas, Sonora, Chihuahua
Amsonia peeblesii Woodson – Peebles' bluestar – Arizona
Amsonia repens Shinners – creeping bluestar – E Texas, SW Louisiana
Amsonia rigida Shuttlw. ex Small – stiff bluestar – from Georgia to Louisiana
Amsonia tabernaemontana Walter – eastern bluestar – S + C + E United States
Amsonia tharpii Woodson – feltleaf bluestar – W Texas, SE New Mexico
Amsonia tomentosa Torr. & Frém. – woolly bluestar – SW US; Chihuahua


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