To be in exile means being away from your home (i.e. city, state or country) and being either explicitly refused permission to return or being threatened by prison or death upon return.
... south the maple, mountain ash and oak, as also the Japanese Panax ricinifolium, the Amur cork[?] (Philodendron amurense), the spindle tree[?] (Euonymus macropterus) and ...