Which country has the most significant number of indigenous plant species?

Australia has the most significant number of indigenous plant species of any country, with more than 24,000 species identified. This is due in large part to the fact that Australia has a unique and isolated ecosystem that has allowed for the evolution of many distinct plant species over time.

Many of these species are found nowhere else in the world, making Australia a biodiversity hotspot. Some of the most well-known Australian plants include the eucalyptus tree, the kangaroo paw, and the banksia flower.

While Australia has the most indigenous plant species overall, there are other countries with high levels of plant diversity in certain regions. For example, the tropical rainforests of Brazil and the Andes Mountains in South America are also known for their high levels of plant species diversity.