According to the current code for Botanical Nomenclature, the names of family generally end with
Aceae
The naming of families is codified by various international codes. In fungal, algal, and botanical nomenclature, the family names of plants, fungi, and algae end with the suffix "-aceae", with the exception of a small number of historic but widely used names including Compositae and Gramineae. In zoological nomenclature, the family names of animals end with the suffix "-idae"