Plant, iris, a team transmuted (9)
I believe the answer is:
artemisia
'plant' is the definition.
The answer is an example.
'iris a team transmuted' is the wordplay.
'transmuted' is an anagram indicator.
'iris'+'a'+'team'='irisateam'
'irisateam' anagrammed gives 'ARTEMISIA'.
(Other definitions for artemisia that I've seen before include "herbaceous plant" , "Aromatic plant related to wormwood" , "Source of malaria drug" , "genus of plants" , "flavour of absinthe" .)