Araucaria araucana

Araucaria is a genus of evergreen coniferous trees in the family Araucariaceae. There are 19 extant species in the genus, with a highly disjunct distribution in New Caledonia (where 13 species are endemic), Norfolk Island, eastern Australia, New Guinea, Argentina, Chile, and southern Brazil.

Araucaria araucana (popularly called the Monkey-puzzle Tree or Monkey Tail Tree) is an evergreen tree growing to 40 metres (130 ft) tall with a 2 metres (7 ft) trunk diameter. The tree is native to central and southern Chile, western Argentina and south Brazil. Araucaria araucana is the hardiest species in the conifer genus Araucaria. Because of the species's great age it is sometimes described as a living fossil.

Araucaria araucana is the national tree of Chile.