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.
Jungermanniaceae is the namesake family of leafy liverworts. It is a group of small plants that are widely distributed. Several genera formerly included within the family are now classified in the Myliaceae or Solenostomataceae.
Lepidoziaceae is a family of leafy liverworts. It is a group of small plants that are widely distributed.
Porella is a large, common, and widespread genus of liverworts in order Porellales. It is a member of the family Porellaceae within that order.
Bazzania is a genus of liverwort in the family Lepidoziaceae.
Schistochila is a genus of liverworts in the order Jungermanniales. It is the only genus in the family Schistochilaceae.
Colura is a genus of epiphytic type of liverworts and consists of approximately 58-60 species, that are distributed generally in the tropics.
Perrottetinene is a naturally occurring cannabinoid compound found in liverworts from the genus Radula native to Japan, New Zealand and Costa Rica, namely Radula perrottetii, Radula marginata and Radula laxiramea, along with a number of similar compounds. Its chemical structure closely resembles that of THC, the main active component of marijuana but with a cis rather than trans conformation and a bibenzyl tailchain instead of pentyl. The absolute configuration of perrottetinene was established in 2008 by an enantioselective total synthesis.
Pleurozia is the only genus of liverworts in the family Pleuroziaceae, which is now classified in its own order Pleuroziales, but was previously included in a broader circumscription of the Jungermanniales. The genus includes twelve species, and as a whole is both physically distinctive and widely distributed.
Ptilidium is a genus of liverwort, and is the only genus in family Ptilidiaceae. It includes only three species: Ptilidium californicum, Ptilidium ciliare, and Ptilidium pulcherrimum. The genus is distributed throughout the arctic and subarctic, with disjunct populations in New Zealand and Tierra del Fuego. Molecular analysis suggests that the genus has few close relatives and diverged from other leafy liverworts early in their evolution.
Radula marginata, or Wairuakohu, is a species of plant in the genus Radula, a genus of liverworts. It is endemic to New Zealand. It has been found to contain cannabinoids.
Cephaloziaceae is a family of liverworts.
Calypogeiaceae is a family of liverworts. This type of plant is a calcifuge.
Aneura is a genus of liverworts in the family Aneuraceae.
Burmese amber is fossil resin dating to the early Late Cretaceous Cenomanian age recovered from deposits in the Hukawng Valley of northern Myanmar. It is known for being one of the most diverse Cretaceous age amber paleobiotas, containing rich arthropod fossils, along with uncommon vertebrate fossils and even rare marine inclusions. A mostly complete list of all taxa described up until 2018 can be found in Ross 2018; its supplement Ross 2019b covers most of 2019.
Jungermannia is a genus of leafy liverworts belonging to the family Jungermanniaceae. They have a worldwide distribution.
Trichocolea is a genus of liverworts belonging to the family Trichocoleaceae.
Lepicolea is a genus of liverworts belonging to the family Lepicoleaceae.
