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''Haworthia marginata'' is a species of ''Haworthia'' succulent plant, from the Western Cape, South Africa. ==Description and taxonomy== It is an evergreen, winter-growing succulent plant with short, sharp leaves arranged in rosettes of 20 cm in diameter. The leaves are hard, keeled, upright, pale in colour, and can be with tubercles. In the summer (November to December), H.marginata produces pink-white flowers on a multi-branched inflorescence. ''Haworthia marginata'' is a variable species, with different populations and varieties, differing in the leaf shape, colour, growth form and tubercles. It is also one of the largest of the ''Haworthia'' species, and is classed with the other large species (''H.maxima'', ''H.minima'' and ''H.kingiana'') in the ''"Robustipedunculares"'' subgenus. Following recent phylogenetic studies, it has been shown that these four species in fact constitute a distinct out-group, separate from other Haworthias. It has therefore been proposed to class them as a separate genus, ''"Tulista"''.〔Manning, J.C., Boatwright, J.S., Daru, B.H., Maurin, O. and Van der Bank, M. 2014. ''A molecular phylogeny and generic classification of Asphodelaceae subfamily Alooideae: A final resolution of the prickly issue of polyphyly in the Alooids?''. Systematic Botany 39(1):55-74.〕〔http://haworthiaupdates.org/haworthia-revisited-59-haworthia-marginata/〕 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「Haworthia marginata」の詳細全文を読む スポンサード リンク
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