None take residence in tree (5)
I believe the answer is:
olive
'tree' is the definition.
(I know that olive is a type of tree)
'none take residence' is the wordplay.
'none' becomes 'o'.
'take residence' becomes 'live' (reside or live somewhere).
'o'+'live'='OLIVE'
'in' is the link.
(Other definitions for olive that I've seen before include "Oil-producing fruit" , "yellowish green" , "Yellowy-green colour and fruit" , "It's branch is a symbol of peace" , "Type of green" .)