Echinocystis Torr. & A. Gray Echinocystis Torr. & A. Gray, Fl. N. Amer. 1(3): 542. 1840 sec. Schaefer & Renner 2011=Micrampelis Raf. in Med. Repos., ser. 2, 5: 350. 1808 syn. sec. Jeffrey 1990=Hexameria Torr. & A. Gray, Rep. Pl. New York. 137. 1839 syn. sec. Jeffrey 1990