Ade Edmondson's flower (3)

I believe the answer is:

dee

I'm a little stuck... Click here to teach me more about this clue!

'flower' is the definition.
(River Dee)

'ade edmondson's' is the wordplay.
'DEE' is hidden within the letters.
However, I am uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for dee that I've seen before include "River at Chester" , "River name" , "John ---, Elizabethan mage" , "Welsh river" , "River of Scotland" .)

I've seen this clue in The Sun.

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