Stylidium costulatum (Stylidaceae), a new tropical species of triggerplant from the Kimberley, Western Australia and the lectotypification of S. floodii
KENNEALLY, KEVIN F. AND LOWRIE, ALLEN

A new species of Stylidium (Stylidiaceae) from the Kimberley Region, S. costulatum Lowrie and Kenneally is described and illustrated and S. floodii, its closest relative, is lectotypified. The terms cunabulum (for the dilated part of the column) and torosus (for the mobile column hinge) are proposed.