Additions and amendments to the rare or threatened vascular plants of Wollemi National Park, central eastern New South Wales

A review and update to the list of significant vascular plant taxa has been made for the c. 500 000 ha Wollemi National Park, approximately 100 km north-west of Sydney, New South Wales. A previous assessment in 2008 revealed the presence of 94 significant taxa, including 15 listed as Endangered and 22 listed as Vulnerable in NSW Threatened Species legislation. New field surveys, coupled with analysis of observation (NSW OEH Bionet Atlas) and specimen collection (Australasian Virtual Herbarium) databases, has added a further 16 significant taxa to the reserve total, elevating it to 110. A revised assessment of the total threatened flora, as listed on the NSW Biodiversity Conservation Act 2016, shows there to be 1 Critically Endangered, 19 Endangered, 26 Vulnerable taxa and 2 Endangered Populations. For Commonwealth listed taxa under the Environment Protection and Biodiversity Conservation Act 1999, there are 1 Critically Endangered, 9 Endangered and 23 Vulnerable taxa. Sixty-one taxa are currently unrepresented within either legislation and may be considered rare, 8 taxa remain scientifically undescribed (one addition in this revision, Pultenaea 'monticola' Mt Irvine), while updated names are provided for two taxa now formally described (Eucalyptus expressa and Prostanthera stenophylla). Following assessment of all newly added taxa against IUCN criteria, one currently unlisted species (Hibbertia coloensis) qualifies as Critically Endangered, while a second (Bertya linearifolia) qualifies as Endangered. Discussion is also provided on six taxa where database records show them to be present within Wollemi, but are here excluded following closer examination