Symphyotrichum eulae (formerly Aster eulae) is a species of flowering plant in the family Asteraceae endemic to Texas. The common names Eula's aster and Texas aster have been used. It is a perennial, herbaceous plant that may reach 5to in height. Its flowers have white to bluish or lavender-white ray florets and yellow then reddish to brown disk florets. It was named for Eula Whitehouse, American botanist, botanical illustrator, and plant collector.
S. eulae is a perennial, herbaceous plant that may reach heights between 5and. It grows from a long and thick rhizome and forms colonies of plants that each have one to three or more erect, straight, and stout glabrous (hairless) stems. Its flowers have white to bluish or lavender-white ray florets and yellow then reddish to brown disk florets.
It has a monoploid number (also called base number) of eight chromosomes The species is hexaploid with six sets of the chromosomes for a total chromosome count of 48.
Symphyotrichum eulae was named by Shinners for Eula Whitehouse, American botanist, botanical illustrator, and plant collector. The common names Eula's aster and Texas aster have been used.
Symphyotrichum eulae is classified in the subgenus Symphyotrichum, section Symphyotrichum, subsection Dumosi. It is one of the "bushy asters and relatives." Its basionym (original scientific name) is and its name with author citations is Symphyotrichum eulae . Botanist Lloyd Herbert Shinners described the species in 1950, classifying it within the genus
Symphyotrichum eulae is endemic to Texas. Shinners reported that it had been found in the Texas counties of Bexar, Calhoun, Cooke, Dallas, Denton, Hill, Hunt, Kaufman, Navarro, Rockwall, Tarrant, Wise, and Wood. In his 1950 protologue for the species, he said that it was "Common in north central Texas, from Hopkins and Wood west to Cooke and Wise counties; extending south to Bexar and Calhoun counties".
The species is found in semi-shaded clay or sandy clay soils at elevations up to 100m (300feet).
, NatureServe listed Symphyotrichum eulae as Apparently Secure (G4) globally and the same (S4) in Texas. Data was provided by the Texas Parks and Wildlife Department Wildlife Diversity Branch. The global status of was last reviewed by NatureServe on