mustard family

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A large family of herbs, the Cruciferae (Brassicaceae), characterized by pungent juice and four-petaled flowers arranged in a cross and including important vegetables such as broccoli, Brussels sprouts, cabbage, cauliflower, kale, radishes, and watercress.

WordNet 3.0

1. n. a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives