All Liverwort Genera (Marchantiophyta)

Liverwort Genera (Marchantiophyta) is a Browse By group of the Nature Atlas that gathers genera of liverworts, small non-vascular land plants that have no true roots, stems or leaves of the kind flowering plants have, such as the fossil Casterlorum, described from the Middle Ordovician of Tennessee as a liverwort, an assignment that later reviewers have questioned. An entry belongs here when its own cited article describes a genus of liverworts, living or fossil. It excludes the genera of ferns, conifers, grasses and flowering plants, which have groups of their own. The group lets a reader follow the earliest lineage of plants to live on land.