Porella is a large, common, and widespread genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of liverworts in order

Order (biology)

In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...

  Jungermanniales

Jungermanniales

Jungermanniales is the largest order of liverworts. They are distinctive among the liverworts for having thin leaf-like flaps on either side of the stem...

. It is a member of the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

  Porellaceae

Porellaceae

Porellaceae is a family of liverworts in order Jungermanniales. It includes two genera: Ascidiota, and Porella....

 within that order. There are more than 100 species known, most of them from East Asia. The genus has a wide distribution in temperate areas, where it is commonly found growing attached to the bark of trees.

Species in Porella

• Porella arboris-vitae
• Porella cordeana
• Porella platyphylla