Monoclea

Monoclea is a genus of liverwort that contains two species. It is the only genus in the family Monocleaceae which itself is the only family in the order Marchantiales. Species of this genus can be found in New Zealand, South and Central America as well as in the Caribbean.
Classifications of the late twentieth century recognized a separate order, Monocleales, but later molecular studies show that it is closely related to the liverwort genus "Dumortiera".