…It is characterized by its alternate leaves, tetrameric flowers, and capsule-shaped fruits. The flowers vary in color from white to yellow to reddish purple, depending on the species. Most bloom in the evening and wilt by the next morning, so they are generally known as tsukimisou or evening primroses in English. Evening primroses have long been known as subjects of cytological research, but they are prone to abnormal cell division, have pleomorphic karyotypes, and are prone to hybridization, which results in a large variation in appearance, making them quite difficult to classify. … *Some of the terminology that mentions "evening primrose" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…アカバナ科の中では,葉がいずれも互生し,花が4数性,果実が蒴果であることを特徴とする。花は白色,黄色,紅紫色など種類によってさまざまであり,多くは夕刻に開き翌朝にはしぼむので,一般にはツキミソウと総称され,英語でevening primrose(夕闇のサクラソウの意)と呼ばれる。マツヨイグサの仲間は,古くから細胞学的な研究対象としても知られているが,細胞分裂に異常を生じやすく核型は多形であり,併せて雑種をつくりやすいこともあって外形的にも変化が大きく,分類はなかなか難しい。… ※「evening primrose」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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