Leaves from AI - Next Chapter (7)

I believe the answer is:

romaine

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

'leaves' is the definition.
(type of lettuce, a leafy vegetable)

'from ai next chapter' is the wordplay.
'ROMAINE' is hidden in amongst the letters.
But, I'm uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for romaine that I've seen before include "lettuce in America" , "Cos lettuce" , "Type of lettuce - I arm one (anag)" , "Variety of lettuce" , "lettuce in the US" .)

I've seen this clue in the Sydney Morning Herald.

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