Cissus trifoliata, known variously as possum-grape, sorrelvine, or vine-sorrel, is a New World plant species in the grape family. It is native to southern and central Florida in the U.S.; Quintana Roo, Yucatán, Michoacán, Oaxaca, Puebla, Veracruz, Baja California, Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Sinaloa, Sonora, and Tamaulipas in Mexico; Venezuela, Colombia and perhaps in Ecuador (Loja). It is also dispersed among some islands in the C