Roots are different in the width of supernumerary cambium and phelloderm and the cell.
生长龄不同,额外形成层、栓内层的宽度和细胞大小不同。
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Results:The circular belt of sclereids in the phelloderm, secondary xylem vessel order of the transverse section, and tetrarch of the primary xylem were microscopic characters.