Artist overlooks minute aphid regularly seen on flower (7)

I believe the answer is:

rampion

I'm a little stuck... Click here to teach me more about this clue!

'flower' is the definition.
The answer and definition can be both plants as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'artist overlooks minute aphid regularly seen on' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'overlooks' means one lot of letters go next to another (in a down clue, some letters go above others).
'minute' becomes 'm' (abbreviation).
'regularly seen' indicates alternate letters.
The alternate letters of 'aphid' are 'pi'.
'ra'+'m'+'pi'+'on'='RAMPION'

Can you help me to learn more?

(Other definitions for rampion that I've seen before include "Wild plant used in salads" , "bellflower" .)

I've seen this clue in The Independent.

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