Photographs of California's common aquatic weeds

• American pondweed (Potamogeton nodosus)
• Brazilian elodea (Egeria densa)
• Cattails (Typha latifolia)
• Common waterweed (Elodea canadensis)
• Coontail (Ceratophyllum demersum)
• Curly leaved pondweed (Potamogeton crispis)
• Duckweed (Lemna spp.)
• Eurasian watermilfoil (Myriophyllum spicatum)
• Filamentous algae
• Horned pondweed (Zannichellia palustris)
• Hydrilla (Hydrilla verticillata)
• Muskgrass (Chara spp.)
• Naiads (Najas spp.)
• Parrot's feather (Myriophyllum aquaticum)
• Planktonic algae
• Sago pondweed (Potamogeton pectinatus)
• Variable leaved pondweed (Potamogeton gramineus)
• Waterfern (Azolla filiculoides)
• Watermeal (Wolffia)
• Widgeon grass (Ruppia spp.)
• Water hyacinth (Eichhornia crassipes)
• Water penny (Hydrocotyl spp.)
• Water primrose (Ludwigia peploides)