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Alstonia Legouixiae
''Alstonia'' is a widespread genus of evergreen trees and shrubs, of the family Apocynaceae. It was named by Robert Brown (botanist, born 1773), Robert Brown in 1811, after Charles Alston (botanist), Charles Alston (1685–1760), professor of botany at Edinburgh from 1716 to 1760. The type species ''Alstonia scholaris'' (L.) R.Br. was originally named ''Echites scholaris'' by Carl Linnaeus, Linnaeus in 1767. Description ''Alstonia'' consists of about 40–60 species (according to different authors) native to tropical and subtropical Africa, Central America, Southeast Asia, Polynesia and Australia, with most species in the Malesia, Malesian region. These trees can grow very large, such as ''Alstonia pneumatophora'', recorded with a height of 60 m and a diameter of more than 2 m. ''Alstonia longifolia'' is the only species growing in Central America (mainly shrubs, but also trees 20 m high). The leathery, sessile, simple leaf, leaves are elliptical, ovate, linear or lanceolate an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alstonia Scholaris
''Alstonia scholaris'', commonly called blackboard tree, Scholar Tree, Milkwood or devil's tree in English, is an evergreen tropical tree in the Dogbane Family (Apocynaceae). It is native to southern China, tropical Asia (mainly the Indian subcontinent and Southeast Asia）and Australasia, where it is a common ornamental plant. It is a toxic plant, but is used traditionally for myriad diseases and complaints. Description ''Alstonia scholaris'' is a glabrous tree and grows up to tall. Its mature bark is grayish and its young branches are copiously marked with lenticels.One unique feature of this tree is that in some places, such as New Guinea, the trunk is three-sided (i.e. it is triangular in cross-section). The upper side of the leaves are glossy, while the underside is greyish. Leaves occur in Whorl (botany), whorls of three to ten; Petiole (botany), petioles are ; the leathery leaves are narrowly obovate to very narrowly spathulate, base cuneate, apex usually rounded and up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
