Hydriastele costata F.M.Bailey legitimate | sensu Council of Heads of Australasian Herbaria (2007), Australian Plant Census
Gulubia costata (Becc.) Becc. legitimate Gulubia costata A.D.Chapm. nom. inval. Gulubia costata (Becc.) Becc. var. costata legitimate Gulubia costata var. gracilior Burret legitimate Kentia costata Becc. legitimate
  • Treated as Gulubia costata in Qld. Chapman, APNI 1494 (1991) listed a non existent "Gulubia costata (Bailey) Becc.", based on a misinterpretation of Beccari's acknowledgement that Bailey and Beccari had inadvertently used the same epithet (costata) for the same species, based on different types, and placed in different genera (see W.J. Baker & A.H.B. Loo, Kew Bulletin 59: 64 (2004) for discussion).
  • Qld