| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Ratibida columnifera | Columnar Prairie Coneflower | Prairies, eastwards in dry disturbed areas, established around nurseries or plantings, waste areas near wool-combing mills. | Ontario west to Alberta, south to Texas, New Mexico, Arizona, and Mexico (Chihuahua, Coahuila, Hidalgo, Nuevo León, Puebla, San Luis Potosí, Sonora, Tamaulipas, Veracruz, Zacatecas); introduced at scattered sites eastward, including e. North Carolina, e. South Carolina, and c. Tennessee (Chester, Wofford, & Kral 1997). Populations in the Black belt prairies of Mississippi and Alabama are plausibly native. |  (c) Bradley, Keith |
| Asteraceae | Ratibida peduncularis var. peduncularis | Naked Mexican-hat | Dry pine savannas. | Sw. Louisiana, se. Texas, to n. Mexico (Coahuila, Tamaulipas). | |
| Asteraceae | Ratibida peduncularis var. picta | Naked Mexican-hat | Sandy coastal areas. | Se. Texas. | |
| Asteraceae | Ratibida pinnata | Globular Prairie Coneflower, Grey-headed Coneflower, Drooping Coneflower | Prairie-like glades and oak savannas over gabbro (usually in Iredell soils) or calcareous rocks, cedar glades, calcareous (black belt or chalk) prairies, disturbed areas (often planted in 'wildflower mixes' and naturalized from cultivation). | S. Ontario west to Minnesota and South Dakota, south to w. Pennsylvania, e. Tennessee, nw. Georgia, Panhandle Florida, Mississippi, Oklahoma, and ne. Texas (Singhurst, Mink, & Holmes 2010); disjunct in nc. South Carolina (Nelson 1993). |  (c) Fleming, Gary P. |
| Asteraceae | Ratibida tagetes | Green Mexican-hat | Prairies. | Nebraska, Colorado, and Utah south to w. Texas, New Mexico, Arizona, and n. Mexico (Chihuahua, Sonora). |