A serpent in French, a tree in English (5)

I believe the answer is:

aspen

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'a tree in english' is the definition.
I can't judge whether this defines the answer.

'a serpent in french' is the wordplay.
'a serpent' becomes 'asp' (asp is a kind of serpent).
'in french' becomes 'en' ('in' in French).
'asp'+'en'='ASPEN'

Can you help me to learn more?

(Other definitions for aspen that I've seen before include "Colorado ski resort - tree" , "city in Colorado" , "ski resort in America?" , "Trembling poplar tree" , "Trembler" .)

I've seen this clue in The Globe and Mail.

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