There are 7 species: •
Ratibida coahuilensis B.L.Turner -
Coahuila •
Ratibida columnifera (
Nutt.)
Wooton &
Standl. – upright prairie coneflower - widespread in Canada, United States, and northeastern Mexico •
Ratibida latipalearis E.L.Richards -
Chihuahua •
Ratibida mexicana (S.Watson) W.M.Sharp -
Chihuahua,
Coahuila,
Sonora •
Ratibida peduncularis (
Torr. &
A.Gray)
Barnhart – naked prairie coneflower -
Louisiana,
Texas •
Ratibida pinnata (
Vent.) Barnhart – pinnate prairie coneflower - Ontario, eastern + central United States (primarily
Great Lakes +
Mississippi Valley) •
Ratibida tagetes (
E.James) Barnhart – short-ray prairie coneflower -
Chihuahua, United States (desert southwest, western
Great Plains) ==References==