…In compound leaves, the vascular bundles of the central axis branch off and enter the rachis, then branch off to form the mid-veins of the leaflets and lobes. In simple leaves, the leaf scar becomes the vascular bundle of the midrib, and the branching vascular bundles become the veins. The veins that create the various patterns on the leaf blade are structures formed by the vascular bundles that enter the leaf and the specialized tissues that surround them. … *Some of the terminology that mentions "vein" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…複葉では中軸の維管束が分枝して羽軸に入り,枝分れして小葉や裂片の主脈となる。単葉の場合,葉跡はそのまま葉の中肋の維管束となり,それから枝分れした維管束が葉脈veinとなる。葉身にいろいろの模様をつくる葉脈は,葉へ入ってきた維管束とそれをとり巻く特殊な組織とでつくられる構造である。… ※「vein(葉脈)」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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