| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Cyperaceae | Isolepis carinata | Keeled Bulrush | Moist soils adjacent to granitic flatrocks, seepage areas, ephemeral pools, moist sandy sites, low fields, ditches. | Se. VA, c. NC, KY, s. IL, MO, and se. KS south to Panhandle FL and c. TX; also in CA. |  |
| Cyperaceae | Isolepis cernua var. cernua | Moist sandy soils. | Nearly worldwide in distribution (New World and Old World, and southern and northern hemispheres, but largely absent from the tropics). In North America, known from se. TX; Pacific coast of North America. The populations in TX were only relatively recently discovered (1974); it is uncertain if the species is native or introduced in the state, but given the wide distribution and weedy nature of the species, it is plausible that they are native but previously overlooked. |  | |
| Cyperaceae | Isolepis hystrix | Bottle-brush Bulrush | Chrome ore piles, a waif. | Native of s. Africa. |  |
| Cyperaceae | Isolepis pseudosetacea | Altamaha grit outcrops, igneous and sandstone glades, saline glades, moist soils. | E. GA (Carter, Baker, & Morris 2009) west to sw. MO, AR, and c. TX. Reported for MS (J.R. Rigby, pers. comm., 2018). |  | |
| Cyperaceae | Isolepis setacea | On waste and ballast at Camden, NJ and Philadelphia, PA in the 1800s, presumably merely a waif. | Native of Eurasia and Africa. |  |
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