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| A grapevine wraps itself around a tree in Congaree National Park near Columbia, South Carolina. Image is courtesy of Bruce Allen. |
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| Trumpet creeper vine, Congaree National Park near Columbia, South Carolina. Image is courtesy of Bruce Allen. |
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| Lead author Bruce Allen stands next to a grapevine in Congaree National Park near Columbia, South Carolina. Image is courtesy of Bruce Allen. |