Man set out part of a flower (6)
I believe the answer is:
stamen
'part of a flower' is the definition.
('stamen' is part of 'flower')
'man set out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'man'+'set'='manset'
'manset' anagrammed gives 'STAMEN'.
(Other definitions for stamen that I've seen before include "The pollen-bearing organ of flowering plants" , "Flower pollen carrier" , "Manet's (anag.)" , "Fertiliser" , "Male ditto" .)