Ruehssia trivirgulata (Bartlett) L.O. Alvarado Ruehssia trivirgulata (Bartlett) L.O. Alvarado in Phytoneuron 47: 16. 2021 sec. Alvarado-Cárdenas & al. 2021≡Marsdenia trivirgulata Bartlett in Proc. Amer. Acad. Arts 44(21): 632. 1909 syn. sec. ???