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一般通称的桉树或“有加利”是指桉属(Eucalyptus)的好多种植物来说的.桉属是属于桃金娘科(Myrtaceae)的一个大属,种类相当繁多,除了1种产在的摩尔和2种产在印度半岛而外,几乎全部都产在澳洲和其邻近的岛屿.这一属植物究竟有多少种,到目前为止还没有一个公认的精确数字.据1936年Engler-Diels的报导,桉属有600种,而1949年Bailey和Rehder说只有300种,最近苏联格洛巴来哈依连珂说有500多种,??戈纳则说有600多个种和变种.造成种类统计数目上的不统一,很可能是由于各学者对于分类上的观点不同所导致的.因为桉树具有很大的经济价值,在1843年后,世界上比较温暖的国家都先后引入栽培了.我国引入桉树栽培的确切年
Commonly known as Eucalyptus or “Carya” are a number of plants of the genus Eucalyptus, a large genus belonging to the Myrtaceae family, And two species in the Indian Peninsula, almost all of which are produced in Australia and its adjacent islands.There are many species of this genus, so far there is no recognized exact figure.According to Engler-Diels in 1936 There are 600 species of eucalyptus, while in 1949 Bailey and Rehder said there were only 300 species. More than 500 species were recently reported by Helioprene in the Soviet Union, while Gona said there were more than 600 species and varieties. The inconsistencies in statistics are likely due to the divergence of views among scholars on the taxonomy, as Eucalyptus is of great economic value and has been introduced to the warmer countries in the world since 1843. My country The exact year of eucalyptus cultivation is introduced