Sentence:  The Myrtaceae is a dicot family in the class Rosidae which also includes the rose and mallow families and falls into the order Myrtales along with the families Lathraceae, Punicaceae (pomegranates) and Onagraceae (<WSD>evening primroses</WSD>) 
Meaning of the word marked with <WSD> tags:  Any plant of family Onagraceae, the evening primrose family.