Pollen producer (6)
'pollen producer' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for stamen that I've seen before include "Male part of flower" , "Flower's pollen carrier" , "The pollen-bearing organ of flowering plants" , "Bit of a bloomer" , "Male reproductive organ of a flower" .)
(Other definitions for anther that I've seen before include "Pollen-producing part of a flower" , "Pollen-holding part of stamen" , "Ran the pollen into it" , "Part of a flower's stamen that contains pollen" , "produces pollen" .)