Phyllostegia parviflora (Gaudich.) Benth. var. canescens Sherff, Amer. J. Bot. 21: 700. 1934.
Type information:
Holotype [US]. U. S. Expl. Exped. s.n.. 1840. Maui: West Maui, mountains.
=Phyllostegia parviflora var. parviflora

*Verification: R.K. Shannon, W.L. Wagner; Wagner, W.L. 1999. Novon 9:265-279.