Ruehssia edulis (S. Watson) L.O. Alvarado Ruehssia edulis (S. Watson) L.O. Alvarado in Phytoneuron 47: 13. 2021 sec. Alvarado-Cárdenas & al. 2021≡Marsdenia edulis S. Watson in Proc. Amer. Acad. Arts 24: 61. 1889 syn. sec. ???