…the morphogene name given to the leaves of the Calamites , a representative articulated plant of the late Paleozoic era. Calamites is the ancestor of the modern horsetails, and was huge, with stems up to 20 cm in diameter. From [Ashigi]… The stems, leaves, and reproductive organs are found separately, so they are called different names. The morphogeneric names for the stems are Calamites , the leaf orb is Annularia , and the reproductive organ sporangium is Calamostachys or Palaeostachys . In the Cathaysian flora of East Asia, in the Permian period, the leaves of the circularly arranged leaf orb Anularia differentiated into two, becoming butterfly-shaped, and evolving into Lobatannularia, whose terminal leaf forms a fan-shaped leaf orb. … *Some of the terminology that mentions "Calamites" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…古生代後期の有節植物を代表する蘆木(カラミテスCalamites)の葉に与えられた形態属名。蘆木は現生トクサ類の祖先系の植物で,茎は直径20cmもあり,巨大であった。… 【蘆木】より… 茎,葉,繁殖器官など別々に発見されるのでそれぞれ別の名で呼ばれる。茎はカラミテスCalamites,葉輪はアヌラリアAnnularia,繁殖器官の胞子囊穂はカラモスタチスCalamostachysまたはパレオスタチスPalaeostachysがそれぞれの形態属名である。東アジアのカタイシア植物群では,二畳紀になると葉が円形に配列する葉輪アヌラリアから左右に分化し蝶形となり,頂葉が扇形の葉輪をなすロバトアヌラリアLobatannulariaへと進化した。… ※「Calamites」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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