Nymphaea mexicana
yellow water lily

Yellow water lily is native to Florida. It is a different species from the fragrant water lily. It sometimes occurs in other southern states (extirpated in Mississippi); but is considered a "state-level noxious weed" in California (Kartesz 1999).

In Florida, yellow water lily occasionally is found in ponds, lakes, streams and rivers. It flowers in the spring and summer.

Learn a bit more about water lilies here.