| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Poaceae | Steinchisma hians | Gaping Panic Grass | Stream, pond, and lake shores, low woods, cypress-gum ponds, floodplains, marshes, ditches, seepage slopes. | Se. VA south to FL, west to TX and OK, and south through Mexico and Central America to Colombia; also in s. South America. |  |
| Poaceae | Steinchisma laxum | Lax Panic Grass | Bottomland forests, wet agricultural fields, other moist disturbed areas. | Native of West Indies and Mexico to South America. |
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