Railliardia platyphylla A. Gray var. leptophylla Sherff, Amer. J. Bot. 20: 619. 1933.
Type information:
Holotype [GH]. J. F. Rock 8578. October 1910. Maui: Haleakala, on Pu`unianiau Crater. Isotype(s) [BISH! [6], [photo F!], F!, GB!, GH!, K!, NY!, UC!, US!].

Note: As "Raillardia". Photo of holo at F!.

=Dubautia platyphylla
Note: As "Raillardia". Photo of holo at F!.

*Verification: None.