Countries where many trees are seen (6)

'countries where many' is the definition.
I can't tell whether this defines the answer.

'trees are seen' is the wordplay.
I cannot quite understand how this works, but
'trees' could be 'limes' (lime is a kind of tree) and 'limes' is found within the answer.
A single letter 'c' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?