Plant is clean after treatment (7)

I believe the answer is:

sanicle

'plant' is the definition.
(sanicle is a kind of plant)

'is clean after treatment' is the wordplay.
'after treatment' is an anagram indicator.
'is'+'clean'='isclean'
'isclean' is an anagram of 'SANICLE'.

I've seen this clue in The Telegraph.

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