. "Sophora howinsula , commonly known as Lignum Vitae or Lord Howe Kowhai, is a flowering plant in the legume family. The specific epithet refers to the island to which the species is endemic."@en . "*Sophora tetraptera var. howinsula (W.R.B.Oliv. (1917)" . . . "Sophora howinsula"@en . . "*Sophora tetraptera subsp. howinsula (W.R.B.Oliv.) Yarkovlev (1967)" . . . . . . .