Fir cone might come from this sort of tree (7)
I believe the answer is:
conifer
'tree' is the definition.
(conifer is a kind of tree)
'fir cone might come from this sort' is the wordplay.
'fir cone' anagrams to 'CONIFER'.
Though, I am not clear how this is indicated.
'of' is the link.
Can you help me to learn more?
(Other definitions for conifer that I've seen before include "The tree keeps its leaves" , "Type of tree" , "Fir or larch, for example" , "Evergreen (generally)" , "E.g. yew, pine or fir" .)