The periderm is the secondary protective tissue of the rhizome, and is composed of pellem, pellogen and phelloderm;
周皮由木栓、木栓形栓内组;
The periderm is the secondary protective tissue of the rhizome, and is composed of pellem, pellogen and phelloderm;
周皮由木栓、木栓形栓内组;
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