Liverwort

n.
  1. A ranunculaceous plant (Anemone Hepatica) with pretty white or bluish flowers and a three-lobed leaf; -- called also squirrel cups.
  2. A flowerless plant (Marchantia polymorpha), having an irregularly lobed, spreading, and forking frond.

From this plant many others of the same order (Hepaticæ) have been vaguely called liverworts, esp. those of the tribe Marchantiaceæ. See Illust. of Hepatica.