J. Heinrichs | Semantic Scholar

The first-ever worldwide checklist for liverworts and hornworts is presented that includes 7486 species in 398 genera representing 92 families from the two phyla, providing a valuable tool for taxonomists and systematists, analyzing phytogeographic and diversity patterns, aiding in the assessment of floristic and taxonomic knowledge, and identifying geographical gaps.

The results indicate a subdivision of Marchantiophyta into three well sup- ported classes assigned as Haplomitriopsida, Marchantiopsida and Jungermanniopsida which may represent the oldest extant lineage of land plants.

Overall diversification rates of bryophytes are substantially lower than those reported in ferns and angiosperms, but they increase over time and become comparable to angios perms in the most recent lineages.

A new method to selectively amplify the internal transcribed spacer (ITS) region of most AMF with a unique primer set based on available sequences of the rDNA is established.

Light is shed on the response of alpine ferns in the QTP and HHM to the Quaternary climatic oscillations and suggests that a long term survival area (refugia) of the species was located in the Hengduan Mountains during glaciations, with probable range expansions into north-central regions during interglacial periods.