Phyllostegia triquerta H. St. John , Phytologia 63: 182. 1987. Type information: Holotype [BISH]. H. Mann and W.T. Brigham 404. Maui: East Maui, Haleakala, Ulapalakua.7000ft. Isotype(s) [GH!]. =Phyllostegia haliakalae