Psychotria hathewayi Fosberg , Brittonia 16: 267. 1964.
Type information:
Holotype [NY]. O. Degener and W.H. Hatheway 20653. 7 May 1950. O`ahu: [Waianae Mts.], Mokule`ia, near Pahole Gulch, partly forested slope.1900ft. Isotype(s) [BISH!, US!, W].
=Psychotria hathewayi var. hathewayi

*Verification: Sohmer, S.H. 1977. Lyonia 1:103-186.

Psychotria hathewayi Fosberg var. brevipetiolata Fosberg, Brittonia 16: 267. 1964.
Type information:
Holotype [NY]. O. Degener , A.B. Greenwell and W.H. Hatheway & Caindec 20839. 28 June 1950. O`ahu: [Wai`anae Range], between Pu`u Manawahua and Mauna Kapu, forest.2500ft. Isotype(s) [US].
=Psychotria hathewayi var. brevipetiolata

*Verification: Sohmer, S.H. 1977. Lyonia 1:103-186.