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wild potato vine, wild sweet potato vine, man-of-the-earth, manroot, scammonyroot, Ipomoea panurata, Ipomoea fastigiata | tropical American prostrate or climbing herbaceous perennial having an enormous starchy root; tropical American prostrate or climbing herbaceous perennial having an enormous starchy root; sometimes held to be source of the sweet potato ❲Ipomoea fastigiata, Ipomoea panurata❳ |