D. Nicolle & M.E. French, A revision of Eucalyptus ser. Falcatae from south-western Australia 409 Nuytsia The journal of the Western Australian Herbarium 22(6): 409–454 Published online 18 December 2012 A revision of Eucalyptus ser. Falcatae (Myrtaceae) from south-western Australia, including the description of new taxa and comments on the probable hybrid origin of E. balanites, E. balanopelex and E. phylacis Dean Nicolle1,3 and Malcolm E. French2 1Currency Creek Arboretum, PO Box 808, Melrose Park, South Australia 5039 229 Stonesfield Court, Padbury, Western Australia 6025 3Corresponding author, email:
[email protected] Abstract Nicolle, D. & French, M.E. A revision of Eucalyptus ser. Falcatae (Myrtaceae) from south-western Australia, including the description of new taxa and comments on the probable hybrid origin of E. balanites, E. balanopelex and E. phylacis. Nuytsia 22(6): 409–454 (2012). Twenty terminal taxa (including 18 species) are recognised in Eucalyptus ser. Falcatae. Brooker & Hopper. We include the monotypic E. ser. Cooperianae L.A.S.Johnson ex Brooker (E. cooperiana F.Muell.) in the series. The new species E. annettae D.Nicolle & M.E.French and E. opimiflora D.Nicolle & M.E.French and the new subspecies E. goniantha Turcz. subsp. kynoura D.Nicolle & M.E.French are described. New combinations made are E. adesmophloia (Brooker & Hopper) D.Nicolle & M.E.French, E. ecostata (Maiden) D.Nicolle & M.E.French and E. notactites (L.A.S.Johnson & K.D.Hill) D.Nicolle & M.E.French. The circumscription of some taxa is significantly modified from previous accounts, including that of E.