The density of stoma in the down-epidermis was bigger than the up-epidermis, the two sides of the leaf had corneous layer.

  • 叶为异面叶,表皮毛为多细胞型,下表皮气孔密度多于上表皮,上下表皮均有角质层。

  • 互联网摘选 2025-01-20 11:40:54

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