And directions in america are different : the search for arborescence and the return to the old world occur in the east .

美国的方向也大不相同：对於树状思维的追寻跟回归旧世界，发生在东方国家。

There are knots of arborescence in rhizomes , and rhizomatic offshoots in roots .

块茎有树状的结，而根有块茎的衍生。