Radicchio relative (6)

I think it could be either:

Which length description are you looking for?:

endive

'radicchio relative' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for endive that I've seen before include "Chicory-type salad vegetable" , "Veined (anag) - salad plant" , "Salad plant related to chicory" , "Plant used in salads" , "Envied (anag.)" .)

I've seen this clue in the LA Times and The New York Times.

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