Railliardia scabra DC. , Prodr. 6: 441. 1838.
Type information:
Lectotype [G-DEL]. J. Macrae s.n.. June 1825.
Lectotypified in Sherff. Bernice P. Bishop Mus. Bull. 135: 112. 1935. Isolectotype(s) [G-DC, microfiche!, GH! [photo F!], fragment of B at BISH!].

Note: As "Raillardia".

=Dubautia scabra subsp. scabra
Note: As "Raillardia".

*Verification: None.

Railliardia scabra DC. var. hispidula A. Gray, Proc. Amer. Acad. Arts 5: 133. 1861.
Type information:
Holotype [US]. U. S. Expl. Exped. s.n.. 1840. Hawai`i: Hilo.

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

=Dubautia scabra subsp. scabra
Note: As "Raillardia". Photo of holotype at F!.

*Verification: None.

Railliardia scabra DC. var. leiophylla A. Gray, Proc. Amer. Acad. Arts 5: 133. 1861.
Type information:
Holotype [US]. U. S. Expl. Exped. s.n.. 1840. Maui: East Maui. Isotype(s) [GH! [photo F!]].

Note: As "Raillardia". St. John's (1985) lectotypification is superfluous.

=Dubautia scabra subsp. leiophylla
Note: As "Raillardia". St. John's (1985) lectotypification is superfluous.

*Verification: R.K. Shannon, W.L. Wagner; Carr, G.D. 1985. Allertonia 4:1-123.

Railliardia scabra DC. var. munroi Sherff, Amer. J. Bot. 20: 619. 1933.
Type information:
Holotype [BISH]. G. Munro 747. 23 November 1927. Maui: East Maui, Haleakala Ranch pipe line, edge of thick forest.4250ft. Isotype(s) [BISH! [2], F!].

Note: As "Raillardia."

=Dubautia scabra subsp. leiophylla
Note: As "Raillardia."

*Verification: R.K. Shannon.