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)

consider the other alternative

Either; leaves alternate on an elongated stem (sometimes opposite when subtending flowers); or, leaves tufted on a short stem or arising from a rhizome

consider the other alternative

Leaves entire or with 1–2 lobes or minutely toothed

choose this alternative reject this alternative

Either; leaves lanceolate or broader; or, with long petioles and broader blades

choose this alternative reject this alternative

Leaves linear, mostly ribbon-like, basal or cauline