Crossword Genius

In Wales a flower and in France a fabric (7)

Ross

I believe the answer is:

taffeta

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

'fabric' is the definition.
(I know that taffeta is a type of fabric)

'in wales a flower and in france a' is the wordplay.
I cannot really see how this works, but
'a' is present in the answer.
'france' could be 'ff' (an abbreviation for France written twice) and 'ff' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for taffeta that I've seen before include "fine material for dressing" , "Stiff shiny material" , "Fine crisp silk fabric" , "Crisp, smooth, lustrous fabric" , "Shiny silk fabric" .)

I've seen this clue in The Times and The Sunday Times.
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