1) Brassicaceae 2) Dilleniid dicot family 3) Family brassicaceae 4) Family cruciferae 5) Mustard family 1) Brassicaceae 
Dicotyledon family of 350 genera of mostly herbaceous plants with peppery-flavored leaves. Members include arabidopsis, brassica, and mustard. ... (12 Dec 1998) ... 
Cruciferae is a very extensive natural order of dicotyledonous plants, consisting of herbs which all have flowers with six stamens, two of which are short, and four sepals and petals, the spreading limbs of which form a Maltese cross, whence their name. The fruit is a pod with a membranous placenta dividing it into two cells. The mustard, water-cre...
[n] - plants with four-petaled flowers
family Cruciferae noun plants with four-petaled flowers