Mentzelia albicaulis var. ctenophora (Rydberg) J. Darlington

Mentzelia albicaulis var. ctenophora (Rydberg) J. Darlington is a synonym sensu TROPICOS of:

Mentzelia albicaulis (Douglas) Douglas ex Torrey & A. Gray, an accepted species name sensu FNA Ed. Comm., 2016.