Clergyman brought back every other biennial fragrant plant (7)

I believe the answer is:

verbena

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'fragrant plant' is the definition.
'verbena' can be an answer for 'plant' (verbena is a kind of plant). I am not sure about the 'fragrant' bit.

'clergyman brought back every other biennial' is the wordplay.
'clergyman' becomes 'rev' (short for reverend).
'brought back' is a reversal indicator.
'every other' indicates alternate letters.
The alternating letters of 'biennial' are 'bena'.
'rev' written backwards gives 'ver'.
'ver'+'bena'='VERBENA'

Can you help me to learn more?

(Other definitions for verbena that I've seen before include "Vervain (plant)" , "Ornamental plant with showy flowers" , "Ornamental pant" , "Herbaceous plant" , "Garden plant" .)

I've seen this clue in The Irish Times.

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