An update to the taxonomy of some Western Australian genera of Myrtaceae tribe Chamelaucieae: 5. Hysterobaeckea
RYE, B.L.

Eight new species belonging to Hysterobaeckea (Nied.) Rye are described: H. cornuta Rye, H. glandulosa Rye, H. graniticola Rye, H. longipes Rye, H. occlusa Rye, H. petraea Rye, H. pterocera Rye and H. setifera Rye. Hysterobaeckea ochropetala (F.Muell.) Rye is broadly delimited and two new subspecies are described as subsp. cometes Rye and subsp. reliqua Rye. The new subspecies H. setifera subsp. meridionalis Rye is also described. Six of the new taxa have conservation priority. A key is given for the named members of the genus.