…It is native to tropical America, but has become widely naturalized in tropical regions (illustration). In Japan, it is cultivated as a cut flower or potted plant, but the same genus, A. tuberosa L. (English name butterfly weed, pleurisy root, orange milkweed), native to North America, has thinner leaves and is more widely cultivated. Milkweed is a semi-shrub-like perennial plant that can grow to a height of over 1m and has upright green stems. … *Some of the terminology that mentions "butterfly weed" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…熱帯アメリカ原産であるが,熱帯域に広く帰化している(イラスト)。日本では切花や鉢物として栽培されるが,同属で北アメリカ原産の葉が細いヤナギトウワタA.tuberosaL.(英名butterfly weed,pleurisy root,orange milkweed)の方が多く栽培されている。トウワタは,半低木状となる多年草で,草丈は1m以上となり,緑色の茎を直立する。… ※「butterfly weed」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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