Dubautia latifolia (A. Gray) D.D. Keck , Occas. Pap. Bernice P. Bishop Mus. 11(19): 26. 1936.
*Verification: D.M. Mix.

Type Information
Basionym: Railliardia latifolia A. Gray , Proc. Amer. Acad. Arts 5: 132 1861.
Kaua`i, mountains. 1840. U. S. Expl. Exped. s.n..
Holotype [US]. Isotype(s) [GH! [photo F!]].
Note: as "Raillardia".
*Verification: None.

Basionym: Railliardia latifolia A. Gray var. helleri Sherff, Bot. Leafl. 7: 5 1952.
Kaua`i, [west-central Kaua`i], on Kaholuamanoa [Kaholuamanu], above Waimea. 11-16 October 1895. Heller 2887.
Holotype [F]. Isotype(s) [A, G, GH, K, LE, MO, NY, MSC, P, US!].

Note: Sherff cited 11-16 October, and that is the date on the specimen labels; Heller cited 15 October. We have no evidence that any collections with this number were made on other dates.
*Verification: Wagner, W.L. & R.K. Shannon. 1999. Brittonia 51:422-438.