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The Araucaria species are evergreen trees. The species with the tallest specimens from the genus Araucaria is Araucaria hunsteinii at 89 meters. The oldest specimen from the genus is said to be a 1000-year-old Araucaria araucana. Seedlings have two to four cotyledons (cotyledons).
The sturdy leaves are arranged in a screw-like manner on the branches, which are aligned plagiotropically (plagiotropic: growth direction determined by geotropism, which does not have the orientation of the shoot axis). On young trees, the leaves are needle-shaped and also screw-shaped. In mature trees, the leaves are usually scale-shaped and screw-shaped or arranged in two layers that overlap one another. The leaves last for many years. Vegetative propagation of Araucaria species is not possible because they no longer sprout from cut shoots. As a result, cuttings cannot be propagated by cuttings from their main roots.
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