Family: Composite or Sunflower (Compositae)
Size: To 0.5 in. wide
Notes: White rays and yellow disks; numerous flower heads on branches. Perennial with hairy stems, leaves alternate, narrow to 0.25 in. long. More than a dozen species of Aster in Arizona.
This plant is found on the Appleton-Whittell Research Ranch Working Check list of flora.
Entries for White Prairie Aster in the USDA Plants database can be seen.