What is of, pertaining to, or resembling, a family of plants which have four petals arranged like the arms of a cross, as the mustard, radish, turnip, etc called?

cruciferous — (Bot.) Of, pertaining to, or resembling, a family of plants which have four petals arranged like the arms of a cross, as the mustard, radish, turnip, etc. (Webster's 1913.)

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