Crossword Genius

White? Rose provided if not (9)

Ross

I believe the answer is:

otherwise

'if not' is the definition.
(synonyms)

'white? rose provided' is the wordplay.
'provided' indicates an anagram (I've seen 'provide' mean this).
'white'+'rose'='whiterose'
'whiterose' anagrammed gives 'OTHERWISE'.

(Other definitions for otherwise that I've seen before include "Under different conditions" , "White rose (anag.)" , "White rose seen in a different way" , "Differently - or else!" , "in different circumstances" .)

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