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''Raphanus'' (Latin for "radish"〔''Oxford English Dictionary'', 3rd ed. "Raphanus, ''n.''" Oxford University Press (Oxford), 2008.〕) is a genus within the flowering plant family Brassicaceae. Linnaeus described three species within the genus: the cultivated radish (''Raphanus sativus''), the wild radish or jointed charlock (''Raphanus raphanistrum''), and the rat-tail radish (''Raphanus caudatus''). Various other species have been proposed (particularly related to the East Asian daikon varieties) and the rat-tail radish is sometimes considered a variety of ''R. sativus'', but no clear consensus has emerged. ''Raphanus'' species grow as annual or biennial plants, with a taproot which is much enlarged in the cultivated radish. Unlike many other genera in the family Brassicaceae, ''Raphanus'' has indehiscent fruit that do not split open at maturity to reveal the seeds. The genus is native to Asia, but its members can now be found worldwide. Growing wild, they are regarded as invasive species in many regions. ''Raphanus'' species are used as food plants by the larvae of some Lepidoptera species, including cabbage moth, ''Endoclita excrescens'', the garden carpet, and the nutmeg. ==External links== *(Jepson Manual treatment of the genus ) *(Missouri Botanical Gardens page on the rat-tail radish ) 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「Raphanus」の詳細全文を読む スポンサード リンク
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