Random sample of trees (6)
I believe the answer is:
maples
'trees' is the definition.
(maple is a kind of tree)
'random sample' is the wordplay.
'random' indicates anagramming the letters.
'sample' with letters rearranged gives 'MAPLES'.
'of' acts as a link.
(Other definitions for maples that I've seen before include "MP sale of trees" , "Acer trees" , "Acers" , "Trees providing syrup" , "Trees of Canada" .)