Click on image for larger version.
Swanflower (Aristolochia erecta) flower and seed pods. This is the host plant for the Pipevine Swallowtail. Waterstone Nature Preserve, Wimberley, Hays County, Texas. Canon 1Ds Mark III with a 300 mm f/4 IS lens with a 2x teleconverter and fill flash. Exposure was manual, f/22, 1/300s, ISO 400, 05-25-08.