Sort of green variety (5)
I believe the answer is:
genre
'sort' is the definition.
(I know that genre is a type of sort)
'green variety' is the wordplay.
'variety' indicates an anagram.
'green' is an anagram of 'GENRE'.
'of' is the link.
(Other definitions for genre that I've seen before include "Style/category of art" , "Green (anag)" , "Literary or artistic type or style" , "Style (of art/literature)" , "Artistic or literary category" .)