Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.
髓
发达，髓射线明显。
的bicollateral bundle
维管束Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.
髓发达，髓射线明显。
The micrib belonging to bicollateral bundle is well developed.The bundle sheath is composed of idioblasts.
主脉发达，有异细胞组成的维管束鞘，
。
ResultsThe root of Tylophora atrolliculata Metc. had amphicribral vascular bundle, however steme had bicollateral vascular bundle.
法利用显微镜观察其根、茎的横切面结构组织与根粉末特征。
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成，
分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
