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Araucaria columnaris is a distinctive narrowly conical tree growing up to 60 m (200 ft) tall in its native habit. The trees have a slender, spire-like crown. [3] The shape of young trees strongly resembles A. heterophylla. The bark of the Cook pine peels off in thin paper-like sheets or strips and is rough, grey, and resinous.
Araucaria (/ æ r ɔː ˈ k ɛər i ə /; original pronunciation: [a.ɾawˈka. ɾja]) [ 2 ] is a genus of evergreen coniferous trees in the family Araucariaceae . While today they are largely confined to the Southern Hemisphere , during the Jurassic and Cretaceous they were globally distributed.
Araucaria columnaris, Armenia, Colombia: Date: 24 May 2014, 10:36: Source: Araucaria o Pino de pisos / de Norfolk (Araucaria heterophylla / excelsa) Author: Alejandro Bayer Tamayo from Armenia, Colombia
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Araucariaceae is a family of conifers with three living genera, Araucaria, Agathis, and Wollemia.While the family's native distribution is now largely confined to the Southern Hemisphere, except for a few species of Agathis in Malesia, it was formerly widespread in the Northern Hemisphere during the Jurassic and Cretaceous periods.
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They disintegrate at maturity to release the nut-like edible seeds. The seeds have a length of 2.5 to 3 cm (1.0 to 1.2 in) and a diameter of about 1.2 cm (0.5 in) with wide wings. There are four cotyledons present. It is a dioecious tree (male and female flowers in different plants), although it can also be monoecious.
Araucaria araucana is a masting species, and rodents are important consumers and dispersers of its seeds. The long-haired grass mouse, Abrothrix longipilis, is the most important animal responsible for dispersing the seeds of A. araucana. This rodent buries seeds whole in locations favorable for seed germination, unlike other animals. [10]
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