Cyanea angustifolia (Cham.) Hillebr. var. isabella E. Wimm., in Engler, Pflanzenr. IV. 276c. (Heft 108): 821. 1968.
Type information:
Holotype [W]. O. Degener and I. Degener 23750. 16 November 1954. Maui: Wailuku, Black Gorge, at bottom near waterfall. Isotype(s) [W!].
=Cyanea elliptica