Euphorbia hillebrandii H. Lév. , Repert. Spec. Nov. Regni Veg. 10: 151. 1911.
Type information:
Holotype [P]. U. Faurie 468. December 1909. O`ahu: Ka`ala. Isotype(s) [A, BISH!, BM].

Note: Koutnik, D.L. 1987. Allertonia 4:331-388

=Euphorbia multiformis var. multiformis
Note: Koutnik, D.L. 1987. Allertonia 4:331-388

*Verification: David Lorence.

Euphorbia hillebrandii H. Lév. var. palikeana O. Deg. & Sherff, in Sherff, Bot. Gaz. (Crawfordsville) 97: 581. 1936.
Type information:
Holotype [NY]. O. Degener , K. Park and & W. Bush 8049. 19 September 1932. O`ahu: third small valley NE of Palikea (contains pipeline arising from tunnel), open woods. Isotype(s) [BISH!, F].

Note: Koutnik, D.L. 1987. Allertonia 4:331-388

=Euphorbia multiformis var. multiformis
Note: Koutnik, D.L. 1987. Allertonia 4:331-388

*Verification: David Lorence.

Euphorbia hillebrandii H. Lév. var. waimanoana Sherff, Bot. Gaz. (Crawfordsville) 97: 581. 1936.
Type information:
Holotype [BISH]. C.N. Forbes and D. Lake 1978.O. 27-30 October 1914. O`ahu: Waimano Ridge.

Note: Published as "wainianana," with an annotation by Sherff on the holotype correcting the spelling of the epithet. Koutnik, D.L. 1987. Allertonia 4:331-388.

=Euphorbia multiformis var. multiformis
Note: Published as "wainianana," with an annotation by Sherff on the holotype correcting the spelling of the epithet. Koutnik, D.L. 1987. Allertonia 4:331-388.

*Verification: David Lorence.