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The taxonomy of ''Banksia integrifolia'' has a long and complex history, the result of confusion caused by the species' great variability, and similarities with some closely related species. The existence of hybrids between ''B. integrifolia'' and related species as well as early attempts to classify the species based on dried specimen material have also contributed to the confusion. The species is divided into three subspecies: ''B. i.'' subsp. ''compar'', ''B. i.'' subsp. ''integrifolia'', and ''B. i.'' subsp. ''monticola''. Recent molecular studies support this division. Until recently, ''B. integrifolia''s taxonomic placement within the genus was largely settled, with the species placed in ''Banksia'' subg. ''Banksia'' sect. ''Banksia'' ser. ''Salicinae''. DNA analyses have now cast doubt upon this arrangement and the publication of a new arrangement based on phylogenetic considerations has been foreshadowed. ==Background== (詳細はBanksia'' species. It occurs between Victoria and Central Queensland in a broad range of habitats, from coastal dunes to mountains. It is highly variable in form, but is most often encountered as a tree up to 25 metres (82 ft) in height. Its leaves have dark green upper surfaces and white undersides, a contrast that can be striking on windy days. A hardy and versatile Australian native plant, ''B. integrifolia'' is widely planted in domestic gardens. Within its natural distribution it is a popular choice in parks, streetscapes, bush revegetation and stabilisation of dunes. Its hardiness has prompted research into its suitability for use as a rootstock in the cut flower trade, but has also caused concerns about its potential to become a weed outside of its natural habitat. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Taxonomy of Banksia integrifolia」の詳細全文を読む スポンサード リンク
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