Charpentiera tomentosa Sohmer , Brittonia 24: 300. 1972.
Type information:
Holotype [BISH]. S. Sohmer 6438. 27 May 1970. O`ahu: Wai`anae Mountains, Kaluaa Gulch. Isotype(s) [A, GH, NY, US].
=Charpentiera tomentosa var. tomentosa

*Verification: R.K. Shannon.

Charpentiera tomentosa Sohmer var. maakuaensis Sohmer, Brittonia 24: 302. 1972.
Type information:
Holotype [BISH]. S. Sohmer 6371. 20 January 1970. O`ahu: Ma`akua Gulch, ca. 1.5 miles from beginning of trail in Hau`ula, along streambed and adjoining banks. Isotype(s) [NY].
=Charpentiera tomentosa var. maakuaensis

*Verification: R.K. Shannon.