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In Vietnam, the tree is cultivated in the Mỏ Cày district, Bến Tre province, as well as the northern mountainous areas. [ 1 ] [ 2 ] It has also been grown in the Bố Hạ region of Yên Thế (Yên District) of Bắc Giang province , [ 2 ] but had been eradicated due to the citrus greening disease .
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.
Ochna integerrima, [1] popularly called yellow Mai flower (Vietnamese: mai vàng, hoa mai, hoàng mai in southern Vietnam, although in the north, mai usually refers to Prunus mume), is a plant species in the genus Ochna (/ ˈ ɒ k n ə /) and family Ochnaceae. In the wild, it is a small tree or shrub species (2-7 m tall).
Currently, Vietnam has 34 national parks. Cúc Phương is the first national park and was established in 1966 in the area of 3 provinces: Ninh Bình , Thanh Hóa and Hòa Bình . Meanwhile, the latest national park established is Song Thanh ( Sông Thanh ), setup on December 18, 2020, located in Quảng Nam province.
A Global Trees Campaign project that planted 2000 trees found a 90 percent 10-year survival rate. [11] Another major threat to the survival of A. araucana, is the presence of non-native seed eating species, in particular mammals, which have been shown to severely restrict the reproduction of the tree in comparison to native seed eaters. [12]
It is a tree yielding valuable hardwood found in Cambodia, Laos, Thailand, and Vietnam. [3] In 2022 its status was re-evaluated as Critically Endangered caused by illegal logging and smuggling. [4] Conservationists project that the species could be extinct within 10 years (by 2026). [5]
Afzelia xylocarpa is a tree from Southeast Asia. It grows in Thailand , Vietnam , Cambodia , Laos and Burma in deciduous forests. It can reach 30 metres tall with a trunk up to 2 metres in diameter in a mature specimen.