Seventeen brassica vegetables, that is, mustard greens, baby mustard greens, gai choy, baby gai choy, yu choy, yu choy tip, bok choy, baby bok choy, bok choy sum, Taiwan bok choy, Shanghai bok choy, baby Shanghai bok choy, napa and baby napa, rapini broccoli, and turnip greens, were bought in local food stores in Maryland.