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Agathis australis
''Agathis australis'', commonly known by its Māori name kauri, is a coniferous tree of Araucariaceae in the genus Agathis, found north of 38°S in the northern districts of New Zealand's North Island.
==Overview==
It is the largest (by volume) but not tallest species of tree in New Zealand, standing up to 50 m tall in the emergent layer above the forest's main canopy. The tree has smooth bark and small narrow leaves. Other common names to distinguish ''A. australis'' from other members of the genus are southern kauri and New Zealand kauri.
Kauri forests are among the most ancient in the world. The antecedents of the kauri appeared during the Jurassic period (between 190 and 135 million years ago). Although the kauri is among the most ancient trees in the world, it has developed a unique niche in the forest. With its novel soil interaction and regeneration pattern it can compete with the more recently evolved and faster growing angiosperms. Because it is such a conspicuous species, forest containing kauri is generally known as kauri forest, although kauri need not be the most abundant tree. In the warmer northern climate, kauri forests have a higher species richness than those found further south.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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