Metzgeriales

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.

Aneuraceae (sometimes Riccardiaceae) is a family of thallose liverworts in the order Metzgeriales. Most species are very small with narrow, branching thalli.

Metzgeriaceae is a family of thallose liverworts in the order Metzgeriales. Species may be either monoicous or dioicous.

species of plant

species of liverwort

Metzgeria is a genus of thalloid liverworts in the family Metzgeriaceae.

Riccardia is a plant genus in the liverwort family Aneuraceae.

species of liverwort

genus of liverworts

species of plant

species of liverwort

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,

Vandiemenia ratkowskiana is the only species of liverwort in the genus Vandiemenia. It is endemic to Tasmania, Australia. Its natural habitat is subtropical or tropical dry forests.