Pellia

Pellia is a small but widespread genus of liverworts in the cool and temperate regions of the northern hemisphere. It is classified in order Pelliales and is a member of the family  Pelliaceae within that order.

Süsswassertang, a plant grown submerged in aquaria was once considered to be Pellia endiviifolia, but is now known to be the indeterminate gametophyte of a Lomariopsis species, a type of fern. Pellia liverworts are also often confused with Monosolenium tenerum, another liverwort.

Species
Taxonomy based on work by Söderström et al. 2016
 * Pellia cordaeana Trevisan 1877
 * Pellia crispa Kummer 1875
 * Pellia gottscheana Kreh 1909
 * Pellia longifolia Kummer 1875
 * Pellia undulata Kummer 1875
 * (Apopellia) Grolle 1983a
 * P. (A.) alpicola (Schuster 1991) Damsholt 2007
 * P. (A.) endiviifolia (Dickson 1801) Dumortier 1835
 * P. (A.) megaspora Schuster 1981
 * (Pellia) Raddi 1818
 * P. (P.) appalachiana Schuster 1991
 * P. (P.) epiphylla (Linnaeus 1753) Corda 1829
 * P. (P.) e. borealis (Lorbeer 1934) Messe 1981
 * P. (P.) e. epiphylla Messe 1981
 * P. (P.) neesiana (Gottsche 1867) Limpricht 1876
 * P. (P.) n. columbiana (Krajina & Brayshaw) Schuster
 * P. (P.) n. neesiana (Gottsche 1867) Limpricht 1876