Synonyms
Caltha leptosepala var. biflora (DC.) G.Lawson
Caltha biflora subsp. howellii (Huth) Abrams
Caltha leptosepala subsp. biflora (DC.) P.G.Smit
Caltha leptosepala subsp. howellii (Huth) P.G.Smit
Caltha leptosepala var. howellii Huth
Caltha rotundifolia var. howellii (Huth) K.C.Davis
Caltha howellii (Hutch.) Greene