Viola robusta Hillebr. , Fl. Hawaiian Isl. 16. 1888.
Type information:
Holotype [B]. W. Hillebrand s.n.. 1851- 1871. Moloka`i: Kala`e, Kamalo, in boggy clearings on heights.760m. Isotype(s) [K, MEL [photo BISH]].
=Viola chamissoniana subsp. robusta

*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..

Viola robusta Hillebr. var. mauiensis Rock, Coll. Hawaii Publ. Bull. 1: 6. 1911.
Type information:
Lectotype [BISH]. J. F. Rock 8563. September 1910. Maui: East Maui, Makawao Dist., Haleakala, gulches above Makawao.1065m.
Lectotypified in Skottsb.. Acta Horti Gothob. 13: 493. 1940. Syntype(s) [BISH! [2]].

Note: There are 3 sheets at BISH. One is labelled lectotype. Of the other two, one is clearly a syntype, Rock 8686, "near Kaupo, Maui, Nov. 1910." The other is either an isolectotype or a syntype. The original collection number (8686) was crossed out and replaced with 8563 in the same handwriting. Locality and date are "Haleakala, Maui, Oct. 1910." Check Skottsberg. (RKS & WLW, 1/95)

=Viola chamissoniana subsp. tracheliifolia
Note: There are 3 sheets at BISH. One is labelled lectotype. Of the other two, one is clearly a syntype, Rock 8686, "near Kaupo, Maui, Nov. 1910." The other is either an isolectotype or a syntype. The original collection number (8686) was crossed out and replaced with 8563 in the same handwriting. Locality and date are "Haleakala, Maui, Oct. 1910." Check Skottsberg. (RKS & WLW, 1/95)

*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..

Viola robusta Hillebr. var. oblongifolia Drake, Ill. fl. ins. pacif. 108. 1890. Flora of the Hawaiian Islands --Basionym
Type Information

Note: Nom. nud.

*Verification: None.

Viola robusta Hillebr. var. wailenalenae Rock, Coll. Hawaii Publ. Bull. 1: 6. 1911.
Type information:
Holotype [BISH]. J. F. Rock 8852. 21 October 1911. Kaua`i: high plateau of Wai`ale`ale along Wailenalena Stream, in shady places.4500ft. Isotype(s) [BISH! [4]].
=Viola wailenalenae

*Verification: R.K. Shannon.