Symphyotrichum adnatum (formerly Aster adnatus) is a species of flowering plant in the family Asteraceae native to the southeastern United States and the Bahamas. It is a perennial, herbaceous plant that may reach 30to tall with flowers that have lavender ray florets and yellow disk florets. The common name scaleleaf aster has been used for this species.
Symphyotrichum adnatum is a perennial, herbaceous, cespitose flowering plant that may reach heights between 30and. Each plant has five or more brown hairy stems that can grow erect or sprawling. The stems have thick and firm yellow-green leaves with smooth margins. It blooms from October into December with flowers that have 10–20 dark lavender ray florets and 12–25 yellow disk florets.
The species' basionym (original scientific name) is and it has three other taxonomic synonyms. Its name with author citations is Symphyotrichum adnatus, and a common name scaleleaf aster has been used for it. Within family Asteraceae, tribe Astereae, it is a member of the genus Symphyotrichum and subgenus Virgulus, placed in section Patentes, subsection Brachyphylli, where it exists with its sister species S. walteri.
S. adnatum is native to the Bahamas and the southeastern United States, including Alabama, Florida, Georgia, Louisiana, and Mississippi. It grows at elevations up to 100abbr=offNaNabbr=off in scrubland and woodland with sandy soils.
, NatureServe listed Symphyotrichum adnatum as Apparently Secure (G4) worldwide. The status was last reviewed 2 May 1988.