Monkey puzzle tree (9)
I believe the answer is:
araucaria
'monkey puzzle tree' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for araucaria that I've seen before include "Monkey puzzle tree - Guardian cryptic crossword setter" , "Monkey puzzle tree (or Chile pine)" , "Evergreen" , "puzzle for primates?" , "Coniferous tree" .)