Macfadyena unguis-cati (Cat's Claw Vine) is an invasive woody vine that can rapidly envelop a house. The plant can grow to 120' lengths, with 1/2" diameters. As the plant grows and becomes heavier, it can cause building collapse. There is a native counterpart called Bignonia capreolata (Crossvine), which may be distinguished by its reddish-orange flowers rather than the yellowish flowers of Cat's Claw Vine.Image above: Unidentifed photographer. Unidentified House, New Orleans, c. 1980. Miscellaneous Photographs Collection, Southeastern Architectural Archive, Special Collections Division, Tulane University Libraries.
