Cardiospermum tortuosum Benth. Cardiospermum tortuosum Benth., Bot. Voy. Sulph. 1: 9. 1844 sec. Acevedo 2008=Paullinia sonorensis S. Watson in Proc. Amer. Acad. Arts 24: 45. 1889 syn. sec. The Plant List 2013