Houstonia canadensis var. setiscaphia (L.G. Carr) C.F. Reed

Houstonia canadensis var. setiscaphia (L.G. Carr) C.F. Reed is a synonym sensu Terrell, 1996 of:

Houstonia canadensis Willdenow ex Roemer & Schultes, an accepted species name sensu FNA Ed. Comm., in prep. k.