Railliardia linearis Gaudich. , Voy. Uranie, Part 12, 469, pl. 83. 1830.
Type information:
Lectotype [P]. C. Gaudichaud-Beaupré s.n.. 1816.
Lectotypified in Sherff. Bernice P. Bishop Mus. Bull. 135: 125. 1935. Isolectotype(s) [G! [photo F!]].
=Dubautia linearis subsp. linearis

*Verification: None.

Railliardia linearis Gaudich. var. opposita Sherff, Amer. J. Bot. 20: 619. 1933.
Type information:
Holotype [GH]. J. F. Rock 6126. 21 March 1910. Moloka`i: Maunahui Gulch. Isotype(s) [BISH! [6], F!, GH!].
=Dubautia carrii

*Verification: None.