Like many Chinese genera of plants, Amsonia also occurs in eastern North America. Atypically, however, the centre for diversity for Amsonia is in eastern North America rather than Asia (compare with Magnolia or Acer Section Macrantha (the snakebark maples)).
Of the twenty or so species of Amsonia, 16 occur in eastern North America, while only 4 are distributed in Asia. Amsonia elliptica is the only member of the genus that occurs in China.
The Flora of China summary for Amsonia elliptica reports that:
a decoction of all parts is used to cure chills and to induce sweat.