Family Code: POLYGO Genus Code: EMEX Genus CN: threecornerjack Genus Authority: Campd. Genus Summary: A genus of 2 species, herbs, of Mediterranean Europe and s. Africa. Schuster et al. (2015) advocate merging Emex into Rumex, showing it as sister to Rumex subgenus Acetosa; an alternative course is to recognize Acetosa at generic rank . Genus References: Schuster et al. (2015)=Z; Freeman in FNA (2005). Last Updated: 2019-11-29 Publish: 1