Plants of a region (5)
I believe the answer is:
flora
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">plants of a region</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for flora that I've seen before include "local plants" , "Plants of a particular region" , "The plants of an area (5)" , "collection of plants" , "growth" .)