The periderm of root replaces epidermis.
它以周皮代替表皮。

The epidermis has been replaced by periderm on the surface of stem.
林奈木茎得表面，表皮层已被周皮所代替。

The vascular ray was developed and the development of periderm was obvious.
维管射线发达，周皮发育明显。

The secondary structure of the root consisted of periderm and vascular cylinders.
结果表明，美登木根的次生结构由周皮和维管组织构成。

The results showed that the taproots of transplanted P. ginseng plants consist of periderm and secondary vascular tissue.
结果表明，移山参主根结构由周皮和次生维管组织组成。

The Casparian strip is not obvious in the endodermis. It has actinostele, and primary xylem is diarch. The secondary structure of root of A. trifoliata includes periderm and secondary vascular tissue from the outer to the inner.
内皮层有凯氏带, 星状中柱, 初生根二原型。