Vegetative key to the families
Vegetative Key Vegetative key to the families
Submerged plants rooted in mud. Leaves submerged or floating on the surface or sometimes the leaf blades held erect above the water surface. Freshwater or marine (Amphibious plants are not included in this group)
Leaves opposite or whorled on an elongated stem
Leaves divided pinnately (Myriophyllum) Haloragaceae
Aquatic plants or growing on mud. Petals absent in female flowers Myriophyllum
Terrestrial plants, occasionally on mud. Petals present in female flowers