Interfascicular cambium A single layer of actively dividing cells between the vascular bundles in stems.
束间形成层是位于茎维管束间有旺盛分裂能一层细胞。
The development of xylem is of mesarch.Stomata are monocyclic type.
、柄、上胚轴维管束均为外韧型。
The micrib belonging to bicollateral bundle is well developed.The bundle sheath is composed of idioblasts.
主发达,有异细胞组成维管束鞘,双生韧皮部。
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Huge forests full of ferns, mosses, and some of the earliest vascular plants had taken over much of the planet.
长满蕨类植、苔藓和一最早的维管束植的巨占据了地球的部分地区。
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