The periderm is the secondary protective tissue of the rhizome, and is composed of pellem, pellogen and phelloderm;
周皮由木
层、木形成层
层组成；
The periderm is the secondary protective tissue of the rhizome, and is composed of pellem, pellogen and phelloderm;
周皮由木层、木形成层层组成；
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生成，部分未经过人工审核，其表达
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