Ratibida Explained

Ratibida is a genus of North American plants in the tribe Heliantheae within the family Asteraceae.^[1] Members of the genus are commonly known as prairie coneflowers^{[2] [3]} or mexican-hat.

Species

There are 7 species:^{[4] [5]}

• 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)

Notes and References

1. Rafinesque, Constantine Samuel. 1817. Florula Ludoviciana, page 73
2. http://www.tropicos.org/Name/40022886 Tropicos, Ratibida Raf.
3. Richards, E. L. 1968. A monograph of the genus Ratibida. Rhodora 70: 348–393.
4. http://bonap.net/NAPA/TaxonMaps/Genus/County/Ratibida Biota of North America Program, 2013 county distribution maps
5. Web site: GRIN Species Records of Ratibida . Germplasm Resources Information Network . United States Department of Agriculture . 2011-02-10.