Volume 1 of the landmark series Flora of New South Wales was first published in 1990, and describes the naturally occurring and naturalized ferns, cycads, conifers and some of the flowering plants of that state. Since 1990, parts of Volume 1 have been made substantially out of date by wide-ranging revisions to taxonomy and the discovery or identification of new plant species - such as the 'living fossil' Wollemi pine, featured on the cover of this revised edition. This revised edition of Volume 1 incorporates a 64 page insert that lists all the updates to the information contained within the book, including taxonomic changes, new species descriptions, new data about species and changes to keys. These changes are cross-referenced from the original species or key entry in the volume to the relevant section of the insert, so where necessary readers can quickly check to see what changes have occurred. Additionally, the reference list, glossary and index have all been revised.