Flora of Australia

Part of a series on
Wildlife of Australia
Biodiversity Flora, Fauna, and Fungi Grasses Trees Wildflowers Molluscs Ants Odonates Butterflies Cicadas Moths Spiders Fish Amphibians Reptiles Birds Mammals Endangered species flora fauna Threatened fauna
Conservation Protected areas National parks Game reserves Wildlife sanctuaries Ramsar wetland sites
Organisations National International AZA CITES IUCN WAZA WAP WWF Associated acts Environment Protection and Biodiversity Conservation Act 1999
Related topics Conservation Bush regeneration Ecoregions Forestry Fishing Agriculture Tourism Botanical and Zoological gardens Environmental issues
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The flora of Australia comprises a vast assemblage of plant species estimated to over 21,000 vascular and 14,000 non-vascular plants, 250,000 species of fungi and over 3,000 lichens. The flora has strong affinities with the flora of Gondwana, and below the family level has a highly endemic angiosperm flora whose diversity was shaped by the effects of continental drift and climate change since the Cretaceous. Prominent features of the Australian flora are adaptations to aridity and fire which include scleromorphy and serotiny. These adaptations are common in species from the large and well-known families Proteaceae (Banksia), Myrtaceae (Eucalyptus - gum trees), and Fabaceae (Acacia - wattle).

The arrival of humans around 50,000 years ago^[2][3] and the settlement by Europeans from 1788, has had a significant impact on the flora. The use of fire-stick farming by Aboriginal people led to significant changes in the distribution of plant species over time, and the large-scale modification or destruction of vegetation for agriculture and urban development since 1788 has altered the composition of most terrestrial ecosystems, leading to the extinction of 61 plant species by 2006, and endangering over 1000 more.