Ruehssia parvifolia (Brandegee) L.O. Alvarado Ruehssia parvifolia (Brandegee) L.O. Alvarado in Phytoneuron 47: 15. 2021 sec. Alvarado-Cárdenas & al. 2021≡Marsdenia parvifolia Brandegee in Zoë 5: 235-236. 1908 syn. sec. ???