Emex
| Emex | |
|---|---|
 | |
| Emex spinosa | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Core eudicots |
| Order: | Caryophyllales |
| Family: | Polygonaceae |
| Genus: | Emex Campd. |
Emex is a genus of annual herbaceous plants of the Polygonaceae family. There are only two species in this genus: Emex australis, commonly known as doublegee or three-cornered jack, which is a weed in Australia, and Emex spinosa or lesser jack.