Phyllostegia degeneri Sherff , Brittonia 12: 172. 1960.
Type information:
Holotype [F]. O. Degener and W. Fleming 25235. 28 May 1959. Maui: [East Maui], Haleakala, W side of Ko`olau Gap, in rich, open forest. Isotype(s) [BISH! [2], F, NY [mfc!], US!].

Note: Additional isotypes not distributed at time of publication.

=Phyllostegia ambigua
Note: Additional isotypes not distributed at time of publication.

*Verification: Wagner, W.L. 1999. Novon 9:265-279.