Plant Group: Dicotyledon
Herbs and shrub with simple leaves and stipules sheathing the branchlets below the leaves, leaves are always alternate, flowers are small to minute.
Annual or perennial herbs grow in either permanently or seasonally wet sites. Usually erect or have decumbent stems which may root at the nodes. Spikes of many small flowers at or near the end of branches. Flowers usually bisexual, 4-5 perianth segments petal-like, stamens 4-8. Fruit a nut.