| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Apiaceae | Ptilimnium ahlesii | Coastal Bishopweed, Carolina Bishopweed | Tidal freshwater marshes, often on tip-up mounds, other slight rises, and on floating mats. | This species, recognized but not validly named by H.E. Ahles, ranges from se. NC (Onslow, New Hanover, and Brunswick counties) south through SC to e. GA (McIntosh County). Discovered in s. AL (Baldwin County) in 2022 (Keener et al. 2024). Material from coastal marshes elsewhere in our area may represent this species. |  (c) Bradley, Keith |
| Apiaceae | Ptilimnium capillaceum | Eastern Bishopweed, Atlantic Bishopweed | Ditches, marshes, other wet places. | MA, NY, and MO south to s. FL and TX. |  (c) Sorrie, Bruce A. - CC-BY |
| Apiaceae | Ptilimnium costatum | Big Bishopweed | Tidal freshwater marshes, wet prairies, bottomland hardwood forests. | Se. NC south to GA, and west to IL, MO, and AR (material from LA and TX is of P. texense); it is rare and disjunct through much of that range. Reported for Georgetown County, SC (Bradley et al. [in prep.]). |  (c) Shaw, Joey |
| Apiaceae | Ptilimnium nuttallii | Laceflower, Midwestern Bishopweed | Marshes, ditches, wetlands. | KY, MO, and KS south to se. TN (Chester, Wofford, & Kral 1997; Tn Flora Committee 2015), s. AL, s. LA, and e. TX. |  (c) Soteropoulos, Diana - CC-BY-NC, permission granted to NCBG |
| Apiaceae | Ptilimnium texense | Texas Bishopweed | Wet pine savannas, prairies, seeps. | S. AR south to w. LA and e. TX. |