Boltonia is a small genus of flowering plants in the daisy family Asteraceae, order Asterales. Commonly known as doll's daisies or false asters, Boltonia species are herbaceous perennials that bear numerous small, aster-like flower heads with white to pale lavender ray florets surrounding yellow disc florets — a form that gives them their "false aster" common name. The genus is native primarily to North America, with species distributed across a wide range of habitats from the Great Plains and Mississippi River floodplains to the coastal plain of the Southeast and the Appalachian region. A single species, Boltonia lautureana, extends the genus into eastern Asia, occurring in Japan, Korea, China, and parts of the Russian Far East. The genus currently contains around seven recognised species, including B. asteroides (white doll's daisy), the most widespread member, and B. decurrens (decurrent false aster), a federally listed rare species restricted to floodplain habitats in Illinois, Missouri, and Iowa. Several species are occasionally grown as ornamental garden perennials, valued for their late-season bloom and tolerance of moist soils.
Distribution
Boltonia is native primarily to North America, with individual species occupying distinct ranges: B. asteroides is the most widespread, growing across the Great Plains, Mississippi Valley, and scattered eastern and northwestern states, as well as Saskatchewan and Manitoba; B. diffusa and B. caroliniana are restricted to the Southeast and Atlantic coastal states; B. decurrens is narrowly confined to Illinois, Missouri, and Iowa floodplains; and B. apalachicolensis is endemic to the Florida Panhandle. One species, B. lautureana, occurs in Japan, Korea, China, and the Russian Far East, representing the only member of the genus outside North America.
Taxonomy Notes
Boltonia is placed in the tribe Astereae within the family Asteraceae. Its common names "false aster" and "doll's daisy" reflect its close resemblance to the genus Aster (now more narrowly defined). GBIF treats the genus as accepted under its own name with no synonyms recorded.
