| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Nabalus albus | Northern Rattlesnake-root | Forests, especially over calcareous substrates. | ME west to MB, south to ne. NC, w. NC, WV, MO, and n. AR. Reports of N. albus from the Coastal Plain of NC and perhaps VA are based on P. alba ssp. pallida, which is invalidly published; additionally, specimens attributed to this taxon appear to belong to P. trifoliolata. |  |
| Asteraceae | Nabalus altissimus | Tall Rattlesnake-root | Forests. | NL (Newfoundland) west to MI, south to GA, LA, and AR. |  |
| Asteraceae | Nabalus asper | Rough Rattlesnake-root | Prairies, glades, and barrens, limestone woodlands. | PA, OH, WI, MN, and SD south to c. TN, MS, LA, and OK. Discovered in AL (D. Estes, pers.comm. 2021). |  |
| Asteraceae | Nabalus autumnalis | Slender Rattlesnake-root | Pocosins, pine savannas, forest edges. | NJ south to ne. FL, a Southeastern Coastal Plain endemic. |  |
| Asteraceae | Nabalus barbatus | Barbed Rattlesnake-root, Flatwoods Rattlesnake-root, Prairie Lion’s-foot | Limestone glades, calcareous barrens, and calcareous oak flatwoods. | C. TN (Western Highland Rim) (Chester, Wofford, & Kral 1997), nw. GA, and n. AL west to se. AR, e. TX and w. LA. |  |
| Asteraceae | Nabalus crepidineus | Midwestern Rattlesnake-root | Bottomland forests, rich mesic forests, moist to dryish woodlands, prairies, barrens. | W. NY MI s. WI, and se. MN south to sc. PA, e. WV, sw. VA, e. KY, e. TN, and s. AR. |  |
| Asteraceae | Nabalus cylindricus | Cylindrical Rattlesnake-root, Appalachian Rattlesnake-root | Mountain forests, grassy balds, at moderate to high elevations. | Sw. VA south to w. NC and e. TN. | |
| Asteraceae | Nabalus racemosus | Glaucous Rattlesnake-root | Fens. | NL west to BC, south to n. NJ, w. PA, n. KY, s. IL, s. MO, CO, and BC. |  |
| Asteraceae | Nabalus roanensis | Roan Rattlesnake-root | Mountain forests, grassy balds, at high elevations. | W. NC and e. TN. |  |
| Asteraceae | Nabalus serpentaria | Lion's-foot, Gall-of-the-earth | Forests. | MA south to GA, ne. FL, Panhandle FL, and MS. |  |
| Asteraceae | Nabalus trifoliolatus | Gall-of-the-earth | Forests. | NL (Newfoundland) south to e. NC, n. GA, and TN. |  |
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