Psychotria hexandra H. Mann var. hosakana Fosberg, Brittonia 16: 262. 1964.
Type information:
Holotype [BISH]. F.R. Fosberg 9759. 7 August 1933. O`ahu: Ko`olau Mts., Waipi`o, Kipapa Gulch, wet forest at bottom of gulch.600m. Isotype(s) [A, F, P, US!].

Note: Sohmer (1977, p. 122) erroneously stated that the holotype is at US. Published simultaneously as P. hexandra var. et forma hosakana.

=Psychotria hexandra var. oahuensis
Note: Sohmer (1977, p. 122) erroneously stated that the holotype is at US. Published simultaneously as P. hexandra var. et forma hosakana.

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