1. Convextype dots had not phellem cell in texture.
突嘴型果点无木栓细胞结构，属初生类型；
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2. Secondly, there was a little of collenchyma whose texture was tight in smooth type's endothecium of phellem;
另外，光皮型杜仲在栓内层分布有较少的，质地紧密的石细胞群；
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3. Configuration feature: For lofty deciduous leaf arbor, the bark of grown tree has the phellem layer that develop.
形态特征：为高大的落叶乔木，成年树的树皮有发达的木栓层。
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4. Result: The phellem, phloem and xylem of wild bupleurum scorzonerifolium are different from those in the pharmacopoeia .
结果：野生狭叶柴胡的木栓层，韧皮部，木质部的显微特征均于药典上的记载有所不同。
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5. The thickness of phellem, aerenchyma, diameter of vessel holes, and the number of vessels are related to the anti-waterlogging character.
木栓厚度，通气组织，管孔直径和导管数量与抗涝性相关。
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6. Objective: To study the shape and micro-character of euonymus alatus with phellem wing as drug, it supplied the bases for identifying the euonymus alatus.
目的：对以木栓翅入药的鬼箭羽的形态和显微特征进行研究，为鬼箭羽的鉴别提供依据。
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7. The phellem of periderm and special morphological structure of sweet potato "Lushu 780" and "Shengli 00" play the role of a barrier to the spread and invasion of nematodes.
甘薯品种“鲁薯780”和“胜利百号”的周皮木栓层和一些特殊形态结构是阻止该线虫侵入和扩展的屏障。
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8. The phellem of periderm and special morphological structure of sweet potato "Lushu 780" and "Shengli 00" play the role of a barrier to the spread and invasion of nematodes.
