There are 58,497 tree species worldwide according to the State of the World’s Trees Report. 30% of tree species have threats of extinction. At least 142 tree species are extinct in the wild.
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by Sampad Mohapatra 
58,497 tree species worldwide
The largest number of tree species is in Central and South America, followed by Southeast Asia and Africa. The highest proportion of threatened species is in Tropical Africa. Madagascar is one of the countries with the highest level of threatened trees.
Which regions have the most tree species?
Except for the extreme polar regions and Earth’s highest altitudes, trees are in all ecosystems of the world. The largest number of tree species is in the Neotropics (Central and South America) with 23,631 tree species. Indo-Malaya (tropical Asia) (13,739 species) and the Afrotropics (Africa south of the Sahara, including Madagascar) (9,237 species). The Nearctic (North America) and Oceania are the two regions with the lowest number (1432) of tree species. State of the world’s trees report.
Tree Distribution
Some tree species are naturally widespread. Tallowwood (Ximenia americana) is in 96 countries. Most tree species are limited to a single region or narrow habitat type. 58% of tree species are single-country endemics. Brazil is the most diverse tree flora, with 8,847 tree species, followed by Colombia (5,868 spp.) and Indonesia (5,716 spp.).
A total of 15,748 endemic tree species are in the ten countries. The countries with the most endemic trees are Brazil, Madagascar, Australia, China, Malaysia, Indonesia, Mexico, New Caledonia, Papua New Guinea, Colombia, and the Philippines. New Zealand, Madagascar, and New Caledonia have the greatest proportion of endemic tree species, with over 90% of species found nowhere else.
