''Pallavicinia lyellii'', the ribbonwort or veilwort, is a

dioicous Dioicy () is a sexual system where archegonia and antheridia are produced on separate gametophytes. It is one of the two main sexual systems in bryophytes. Both dioicous () and monoicous gametophytes produce gametes in gametangia by mitosis rathe ...

bryophyte plant in the liverwort

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Pallaviciniaceae Pallaviciniaceae is a widely distributed family of liverworts in the order Pallaviciniales. All species are thallose, typically organized as a thick central costa (midvein), each side with a broad wing of tissue one cell in thickness. All spe ...

. Often seen in moist situations on rocks and soil, with a worldwide distribution.

References

Pallaviciniales Plants described in 1821 Flora of Australia Flora of New Zealand Flora of Germany Flora of the United States Flora of Great Britain {{Bryophyte-stub