| 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. | ON west to AB, south to TX, NM, AZ, and Mexico (CHH, COA, HID, NLE, PUE, SLP, SON, TAM, VER, ZAC); introduced at scattered sites eastward, including e. NC, e. SC, and c. TN (Chester, Wofford, & Kral 1997). Populations in the Black belt prairies of MS and AL are plausibly native. | 
|
| Asteraceae | Ratibida peduncularis var. peduncularis | Naked Mexican-hat | Dry pine savannas. | Sw. LA, se. TX, to n. Mexico (COA, TAM). | |
| Asteraceae | Ratibida peduncularis var. picta | Naked Mexican-hat | Sandy coastal areas. | Se. TX. | |
| 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. ON west to MN and SD, south to w. PA, e. TN, nw. GA, Panhandle FL, MS, OK, and ne. TX (Singhurst, Mink, & Holmes 2010); disjunct in nc. SC (Nelson 1993). | 
|
| Asteraceae | Ratibida tagetes | Green Mexican-hat | Prairies. | NE, CO, and UT south to w. TX, NM, AZ, and n. Mexico (CHH, SON). | |