Subspecies
Marchantia polymorpha ruderalis
Marchantia polymorpha ruderalis. Photo: (c) Sarah Martinez, some rights reserved (CC BY-NC)
Marchantia polymorpha, sometimes known as the common liverwort or umbrella liverwort, is a large liverwort with a wide distribution around the world. It is variable in appearance and has several subspecies. It is dioicous, having separate male and female plants.