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Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

髓部发达,髓射线明显。

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The micrib belonging to bicollateral bundle is well developed.The bundle sheath is composed of idioblasts.

主脉发达,有异细的维管束鞘,双生韧皮部。

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ResultsThe root of Tylophora atrolliculata Metc. had amphicribral vascular bundle, however steme had bicollateral vascular bundle.

用显微镜观察其根、茎的横切面结构织与根粉末特征。

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3G, 401(K), a,

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