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| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
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| Juncaceae | Juncus scirpoides var. compositus | Lobe-headed Rush | Roadsides, wet, open, disturbed areas. | Coastal Plain: NC, GA, FL, AL, MS, LA, SC, TX, VA. | 
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| Juncaceae | Juncus scirpoides | | Non-standard. Added for North Carolina Botanical Garden planted species. | | |
| Juncaceae | Juncus scirpoides var. scirpoides | | Wet, open, disturbed areas, ditches, sandhill pocosin ecotones and seepage bogs, savannas and wet pine flatwoods, wet meadows. | S. NY to s. FL, mostly Coastal Plain and Piedmont; west to TX; IN to MI, MO, OK. | 
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