pericycle

Stele The vascular tissue and associated parenchyma tissue and (if present) the surrounding pericycle and endodermis of a stem or root.
包括根或茎的维管组织及相关薄壁组织，若有维管束鞘和内皮包被则这二者也属于中柱结构。
The vascular bundles of the stem are arranged in a ring within a single endodermis and pericycle, giving a eustele.
茎内的维管束在皮层和中柱鞘内排列成环状，形成真中柱。
The xylem of the root is tetrarch, lateral root initiate the in metaxylem radiating angle opposite to pericycle cell.
根木质部为四原型，侧根发生于木质部放射角所对的中柱鞘细胞；
The pericycle may be constructed of a single layer of cells sometimes.
There lies a pericycle in the inner bark of the root.
Tanning materials are abundant in pericycle cells and phelloderm cells;
Pericycle fibers in the stem were circular;