Aquatic plants with submerged and floating leaves: Glyceria fluitans, Ranunculus peltatus, Nymphaea (Nuphar) - lutea, Callitriche stagnalis, Potamogeton polygonifolius.
From Strasburger's Lehrbuch der Botanik.) Potamogeton natans.
Aquatic vegetation may be conveniently classified as follows: Aquatic plants with submerged leaves: Chara spp., Naias spp., Potamogeton pectinatus, Ceratophyllum spp., Myriophyllum spp., Hottonia palustris, Utricularia spp.
Found the most serviceable: - Hydrophytes (submerged aquatic plants) .Plants whose vegetive organs live wholly in water; e.g., most Algae, many mosses, ch as Fontinalis spp., and liverworts, such as Jungermannia spp.; few Pteridophytes, such as Pilularia spp., Isoetes spp.; several wering plants, such as Potamogeton pectinatus, Ceratophyllum p., Hottonia palustris, Utricularia spp., Liltorella lacustris.
PONDWEED, a popular name for Potamogeton natans, a cosmopolitan aquatic plant found in ponds, lakes and ditches,.