Tetramolopium consanguineum (A. Gray) Hillebr. , Fl. Hawaiian Isl. 199. 1888. Flora of the Hawaiian Islands --Basionym
Type Information
Vittadinia consanguinea A. Gray , Proc. Amer. Acad. Arts 5: 120 1861.
Kaua`i: mountains. 1840. U. S. Expl. Exped. s.n..
Lectotype [US]. Lectotypified in Sherff. Bernice P. Bishop Mus. Bull. 135: 19. 1935.

Note: Additional syntype: Hawai`i, Waimea, U. S. Expl. Exped. s.n. (GH, NY). Lowrey considered the US sheet the holotype, but since Gray cited collections from both Hawai`i and Kaua`i, they are all syntypes and Sherff's treatment is taken as a lectotypification.

=Tetramolopium consanguineum subsp. consanguineum
*Verification: R.K. Shannon, W.L. Wagner.
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*Verification: D.M. Mix.

Tetramolopium consanguineum (A. Gray) Hillebr. subsp. leptophyllum (Sherff) Lowrey, Allertonia 4: 260. 1986. Flora of the Hawaiian Islands --Basionym
Type Information
Tetramolopium consanguineum (A. Gray) Hillebr. var. leptophyllum Sherff, Bot. Gaz. (Crawfordsville) 95: 502 1934.
Hawai`i: Waimea. 1840. U. S. Expl. Exped. s.n..
Holotype [NY]. Isotype(s) [GH].

Note: Isotype is a mixed sheet with isotype of subsp. consanguineum.

=Tetramolopium consanguineum subsp. leptophyllum
*Verification: None.
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*Verification: R.K. Shannon.

Tetramolopium consanguineum (A. Gray) Hillebr. var. kauense Lowrey, Allertonia 4: 262. 1986.
Type information:
Holotype [UC]. T. Lowrey , L. Stemmerman and H. St. John 462. 6 June 1980. Hawai`i: Ka`u District, Kipuka Kamiloaina, 2 mi. SE of Ocean View Estate, 2-3 mi. S of Hwy 11.100ft. Isotype(s) [BISH, K, LAM, MO!, NY, OS, TEX, US].
=Tetramolopium consanguineum subsp. leptophyllum

*Verification: None.

Tetramolopium consanguineum (A. Gray) Hillebr. var. leptophyllum Sherff, Bot. Gaz. (Crawfordsville) 95: 502. 1934.
Type information:
Holotype [NY]. U. S. Expl. Exped. s.n.. 1840. Hawai`i: Waimea. Isotype(s) [GH].

Note: Isotype is a mixed sheet with isotype of subsp. consanguineum.

=Tetramolopium consanguineum subsp. leptophyllum
Note: Isotype is a mixed sheet with isotype of subsp. consanguineum.

*Verification: None.