Systematics of the family Pottiaceae (Bryophyta) with special reference to the familial and subfamilial circumscriptions

Abstract

The family Pottiaceae is the most generic and species rich family in Bryophyta. The classification of this family is very difficult and controversial due to parallel or convergent evolution and sterility. In this paper, we briefly review the current state of knowledge on phylogeny and classification of the family. Molecular phylogenetic inference based on a new approach using a codon substitution model is also undertaken and confirm four clades within the Pottiaceae, corresponding to Trichostomoideae, Pottioideae, Merceyoideae, and a newly proposed subfamily Streblotrichoideae.