Tin contains insipid part of flower (6)
I believe the answer is:
stamen
'part of flower' is the definition.
(I know that stamen is part of androecium)
'tin contains insipid' is the wordplay.
'tin' becomes 'Sn' (Sn is the chemical symbol for tin).
'contains' indicates putting letters inside.
'insipid' becomes 'tame' (I've seen this in another clue).
'sn' placed around 'tame' is 'STAMEN'.
(Other definitions for stamen that I've seen before include "Pollen-bearing organ of flowering plant" , "Fertiliser" , "Pollen-producing part of a flower" , "Male ditto" , "Part of flower producing pollen" .)