...The genera Zostera, H. difficile (Hydrocharis family), Zostera difficile, and Zostera difficile (Hydrocharis family) are found in the tropics and subtropics (Okinawa in Japan). The most notable adaptation to seawater is the method of pollination, which has developed through the unique water currents of these groups. Typical examples include the filamentous pollen of Zostera and Zostera difficile, the bead-like pollen masses of Zostera difficile, and the method in which male flowers of Zostera difficile float on the water surface to attach to female flowers. [Yamashita Takashi]... *Some of the terminology that refers to "filamentous pollen" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…熱帯,亜熱帯(日本では沖縄)にはウミショウブ属,ウミヒルモ属(トチカガミ科),ベニアマモ属,ウミジグサ属(イトクズモ科)などが見られる。海水への適応でとくに著しいのは,送粉の様式で,この仲間独特の水流によるものが発達しており,その典型的なものにアマモ属やウミジグサ属の糸状花粉,ウミヒルモ属の数珠状花粉塊,ウミショウブ属の雄花が水面を流れて雌花につく方式などがある。【山下 貴司】。… ※「糸状花粉」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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