In this way seeds of water plantain, sedges, grasses, rushes, docks, arrowhead, pondweeds, duckweed, cat-tail flag, bur reed, bladderwort, water crowfoot, and many others are transported from one pond, lake, or stream, to another.
"Seed Dispersal"
William J. Beal
The whole western end of the pond is a laughing expanse of water-lilies and yellow Beaver Lilies, with the bright yellow butterfly-shaped blossoms of bladderwort in among them.
"A Northern Countryside"
Rosalind Richards
And who shall say that the sundew or the bladderwort is not a higher organism than the amoeba?
"Wild Flowers Worth Knowing"
Neltje Blanchan et al