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^A National Herbarium of New South Wales, Royal Botanic Gardens & Domain Trust, Mrs Macquaries Road, Sydney, NSW 2000, Australia.

^B Australian National Herbarium, Centre for Australian National Biodiversity Research, National Research Collections Australia, CSIRO, GPO Box 1600, Canberra, ACT 2601, Australia.

^C College of Medicine, Biology and Environment, Research School of Biology, The Australian National University, 46 Sullivan’s Creek Road, R.N. Robertson Building, Acton, Canberra, ACT 2601, Australia.

^D Smithsonian Institution, Department of Botany, National Museum of Natural History, Washington, DC 20013-7012, USA.

^E Corresponding author. Email: russell.barrett@rbgsyd.nsw.gov.au