[1][2] Developed and maintained by the Commonwealth Scientific and Industrial Research Organisation (CSIRO), the most recent edition lists 5031 taxa.
[1] The list uses a binary coding system based on the IUCN Red List categories for "Presumed Extinct", "Endangered", "Vulnerable", "Rare" or "Poorly Known".
However, it also provides for additional information such as geographic range and occurrence in protected areas.
[1][2] In its early days it was the only nationally recognised list of threatened plants, although it had no legal status.
This superseded the Endangered Species Protection Act 1992, and published a single list of threatened flora which largely superseded the three lists then current.