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In this way it is easily conceivable that peltate leaves are a frequent specific character, while ascidia are not, as they only appear in the special cases of limited adaptation, as in the instances of the so called pitcher-plants. The genera Nepenthes, Sarracenia and some others are very well known and perhaps even the bladderworts or Utricularia might be included here.

No current was perceptible: the lilies and other beautiful water-plants, little bladderworts, and bright blue flowers with curious leaves and swollen stalks, floated unmoved on the surface, with occasionally large circular leaves and flowers of a gigantic size, which were new to all of us when we first entered this region.

The villarsia, which looks like a water-lily, is not related at all, while the buck-bean is not a bean, but akin to the gentians. Water-violet might be more properly called water-primrose, for it is closely related to the primrose, though its colour is certainly violet, and not pale yellow. By this time all the bladderworts have disappeared under water.

The bladderworts fade instantly, and are not much interfered with, and though the fritillaries are picked for market, the roots are not dug up because that would injure the meadow turf in which they grow, and business objections would be raised.

Darwin turned his attention to other groups of plants; and, first, to the bladderworts, which have no near kinship with the sundews, but, like the aquatic representative of that family, are provided with bladdery sacs, under water.

Although the bladderworts "prey on garbage," their terrestrial relatives "live cleanly," as nobler plants should do, and have a good and true digestion. Pinguicula, or butterwort, is the representative of this family upon land.