Claim set for review in plant (8)

I believe the answer is:

clematis

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'in plant' is the definition.
'clematis' can be an answer for 'plant' (I've seen this before). I am not sure about the 'in' bit.

'claim set for review' is the wordplay.
'for review' indicates anagramming the letters.
'claim'+'set'='claimset'
'claimset' anagrammed gives 'CLEMATIS'.

Can you help me to learn more?

(Other definitions for clematis that I've seen before include "Ornamental climbing plant" , "Climbing garden plant" , "Buttercup relative" , "Climber's" , "Climates (anag)" .)

I've seen this clue in The Sun.

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