An Introduction to the Western Australian Flora

Western Australia is recognised as possessing one of the most diverse and unique floras in the world. The isolated south-western corner of Western Australia, with its mediterranean climate, is considered amongst the world’s 34 plant biodiversity hotspots.

This web site delivers the latest authoritative information about the Western Australian flora in an accessible and interactive manner. Information is presented in a thematic way, so that users focused on particular components of the State’s flora, such as the conservation taxa or naturalised weeds can readily keep up to date.

Users can also find information by browsing or searching the site to explore their own special interests. FloraBase provides information on Western Australian taxon names of plants, fungi, algae and protists. We also provide identification tools, photos, maps, and (for registered users) the collecting details of over 811,920 vouchered herbarium specimens from across the State. A database of Robert Brown’s Australian botanical specimens is also available.

Browse through the complete list of Western Australia’s families of plants, fungi, algae and protists:

Western Australia hosts representatives from over 210 vascular plant families, the largest families in terms of species number being the Fabaceae, Myrtaceae, Proteaceae, Poaceae and Asteraceae. Endemism in the largest families generally ranges between 50% and 80% indicating both the significant biodiversity of woody perennials and the unique nature of Western Australia’s flora. Further floristic information is available, including details of the newly adopted systematic sequence of families.

As of November 2016, FloraBase provides comprehensive information on the State’s non-vascular flora whenever it is available. The fungi, lichens, bryophytes, algae and some protist groups are now available. Our introduction to the cryptogams provides some further details of these groups and their definition, and our section on the marine plants, features the macro-algae.