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Actinopterygii (/ ˌ æ k t ɪ n ɒ p t ə ˈ r ɪ dʒ i aɪ /; from Ancient Greek ἀκτίς (aktis) 'having rays' and πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish [2] that comprise over 50% of living vertebrate species. [3]
Davidia involucrata, the dove-tree, [1] handkerchief tree, pocket handkerchief tree, or ghost tree, is a medium-sized deciduous tree in the family Nyssaceae. [2] It is the only living species in the genus Davidia. It was previously included with tupelos in the dogwood family, Cornaceae. [3] Fossil species are known extending into the Upper ...
The exact position in the phylogenetic tree is debated. Andreolepis has been considered a primitive actinopterygian, partly based on scale characteristics and the presence of ganoine, a homologue to true enamel, [8] which was thought to be limited to actinopterygians whereas true enamel is limited to sarcopterygians.
In moist and humus-rich environments it becomes a taller, spreading shade tree. This plant prefers a full sun exposure, but can grow on a wide range of dry soils (sand dunes, clay, alkaline and chalky soils, etc.), at an altitude of 0–1,500 metres (0–4,921 ft) above sea level.
The Bengali name of the tree is royna (রয়না). Another name of this tree is pithraj (পিথরাজ). Oil is not edible and can be used as biodiesel and lighting. The very fine wood is used for construction and ship-making. [citation needed] The tree is 20m tall. Leaves are compound, imparipinnate, alternate; oblong-lanceolate ...
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Schotia brachypetala, the weeping boer-bean, is a leguminous flowering tree in the family Fabaceae (bean family/pod-bearing family/legumes) and the subfamily Detarioideae. The woodland tree is native to Africa south of the Zambezi River, where it occurs at middle altitudes. It is well-suited as shade or ornamental tree in warmer regions, and is ...
It is cultivated as a shade tree in North and South America. [9] In India and Pakistan, the tree is used to produce timber. Wood from Albizia lebbeck has a density of 0.55-0.66 g/cm 3 or higher. [10] Bark on a tree in Hong Kong. Even where it is not native, some indigenous herbivores are liable to utilize lebbeck as a food resource.