Smelowskia calycina var. americana (Regel & Herder) W.H. Drury & Rollins

Smelowskia calycina var. americana (Regel & Herder) W.H. Drury & Rollins is a synonym sensu FNA Ed. Comm., 2010 of:

Smelowskia americana Rydberg, an accepted species name sensu FNA Ed. Comm., 2010.