The Marchantiophyta are a division of non-vascular land plants commonly referred to as hepatics or liverworts. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information.
Metzgeriales is an order of liverworts. The group is sometimes called the simple thalloid liverworts: "thalloid" because the members lack structures resembling stems or leaves, and "simple" because their tissues are thin and relatively undifferentiated. All species in the order have a small gametophyte stage and a smaller, relatively short-lived, spore-bearing stage. Although these plants are almost entirely restricted to regions with high humidity or readily available moisture, the group as a whole is widely distributed, and occurs on every continent except Antarctica.
Lejeuneaceae is the largest family of liverworts. Most of its members are epiphytes found in the tropics, while others can be found in temperate regions.
Aneuraceae is a family of thallose liverworts in the order Metzgeriales. Most species are very small with narrow, branching thalli.
Treubiaceae is a family of liverworts in the order Treubiales. Species are large and leafy, and were previously classified among the Metzgeriales.
Biantheridion is a genus of liverwort in the family Anastrophyllaceae. Its only accepted species is Biantheridion undulifolium the marsh flapwort, or marsh earwort. It is found in Austria, China, the Czech Republic, Denmark, Finland, France, Germany, Greenland, North Korea, Norway, Poland, Russia, Sweden, Switzerland, and the United Kingdom. Its natural habitat is swamps. It is threatened by habitat loss.
Jamesoniella is a formerly accepted genus of liverworts. It is considered to be included in the genus Syzygiella, but one species, Jamesoniella convoluta, has not be transferred to that genus nor synonymized.
Schistochila vitreocincta is a species of liverwort in the family Schistochilaceae. Under its synonym Perssoniella vitreocincta it was the only species in the monotypic genus Perssoniella and family Perssoniellaceae. It is endemic to New Caledonia. Its natural habitat is subtropical or tropical dry forests.
Kymatocalyx rhizomaticus, synonym Stenorrhipis rhizomatica, is a species of liverwort in the Cephaloziellaceae family. According to the 2000 IUCN Red List, where it was assessed under the synonym Stenorrhipis rhizomatica, it is endemic to Sarawak. Other sources give its distribution as Central America and northern South America.
Herbertaceae is a family of liverworts. The family consists of the genera Herbertus, Schisma and Triandrophyllum. The genus HerpocladiumMitten, 1873 was later merged into the genus Herbertus.
Blasiales is an order of liverworts with a single living family and two species. The order has traditionally been classified among the Metzgeriales, but molecular cladistics suggests a placement at the base of the Marchantiopsida.
Aneura mirabilis is a parasitic species of liverworts in the family Aneuraceae. It was first described in 1933, as Cryptothallus mirabilis. Plants of this species are white as a result of lacking chlorophyll, and their plastids do not differentiate into chloroplasts.
Cryptothallus is a previously recognized genus of liverworts in the family Aneuraceae. The plants are small, and are white to pale green as a result of lacking chlorophyll. This feature led to the creation of a separate genus. The morphology of species assigned to Cryptothallus is very similar to that of Aneura. As a result, Karen Renzaglia in 1982 suggested that the only species then placed in the genus, Cryptothallus mirabilis, may be considered "merely as an achlorophyllous species of Aneura." Wickett and Goffinet argued the same position on the basis of sequences of nuclear, mitochondrial, and plastid DNA, and moved Cryptothallus mirabilis to Aneura. A 2010 molecular phylogenetic study confirmed the position of Cryptothallus within Aneura. This was accepted in the 2016 world checklist of hornworts and liverworts.
Phycolepidozia is a genus of liverwort in the family Cephaloziellaceae. It contains two species:
Solenostomataceae is a family of liverworts in the order Jungermanniales.
Acrobolbaceae is liverwort family in the order Jungermanniales.
Acrobolbus epiphytus is a liverwort species in the genus Acrobolbus. It occurs in New Zealand.
Gymnomitriaceae is a liverwort family in the order Jungermanniales.
Haplomitrium is a genus of liverworts.
Calypogeiaceae is a family of liverworts. This type of plant is a calcifuge.
