Crossword Genius

Flag lady (4)

Ross

I believe the answer is:

I believe this is a double definition.

'flag' is the first definition.
(type of iris flower)

'lady' is the second definition.

(Other definitions for iris that I've seen before include "Pupil's place?" , "Pupil is at the centre of this" , "Plant - part of the eye" , "Flag - surrounding pupil" , "Flag,flower and part of the eye" .)

I've seen this clue in the Evening Standard.
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