Plant photograph on domineering person (10)
I believe the answer is:
snapdragon
'plant' is the definition.
(snapdragon is a kind of plant)
'photograph on domineering person' is the wordplay.
'photograph' becomes 'snap' (synonyms).
'on domineering person' becomes 'dragon' (I can't explain this - if you can you should give a lot more credence to this answer).
'snap'+'dragon'='SNAPDRAGON'
Can you help me to learn more?
(Other definitions for snapdragon that I've seen before include "that's in the garden?" , "one's found in the garden" , "Kind of antirrhinum" , "The blossom" , "One blooming" .)