Bryophyte Diversity and Evolution

Complete chloroplast genome of Marchantia emarginata subsp. cuneiloba (Marchantiaceae, Marchantiophyta): towards organellar phylogenomics of a model liverwort, Marchantia

TIAN-XIONG ZHENG, YUYA INOUE, MASAKI SHIMAMURA — Wed, 04 Dec 2024 00:00:00 +1300

The complete chloroplast genome sequence of Marchantia emarginata subsp. cuneiloba (Marchantiaceae) was determined. The chloroplast genome was 122,531 bp in length and displayed a typical circular structure composed of a large single-copy region, a small single-copy region, and a pair of inverted repeats. It contains 128 genes, namely 89 protein-coding genes, 35 tRNA genes, and four rRNA genes. Both substitution-based and indel-based phylogenetic trees support the sister relationship of M. emarginata subsp. cuneiloba with M. inflexa. Comparative analysis of chloroplast genome also reveals the usefulness of simple sequence repeat (SSR) patterns for classification in the genus Marchantia.

**On the morphology, ecology and distribution of Orthotrichum camanchacanum (Orthotrichaceae)**

JUAN LARRAÍN, ISABEL DRAPER, RICARDO GARILLETI, FRANCISCO LARA — Wed, 04 Dec 2024 00:00:00 +1300

A new species of Orthotrichum was recently described based on a single collection from the Coquimbo Region of Chile and was then thought to be rare. However, new collections reveal this species as common in central and northern Chile, and since it was described on a single specimen, here we present amendments to the original description. Some of the inaccurately described morphological characters provided in the original description are of diagnostic importance for differentiating this endemic species within closest species of the genus. In addition, we provide data about the ecology of this taxon and an updated distribution map.

**Re-assessment of the familial position of Pseudohypnella (Symphyodontaceae, Bryophyta), with a new record of P. verrucosa in Vietnam**

CHIHIRO MYOTOISHI, YUYA INOUE, NGUYEN VAN NGOC, HIROYUKI AKIYAMA — Wed, 04 Dec 2024 00:00:00 +1300

A unique moss species, Pseudohypnella verrucosa with two kinds of papillae on laminal cells and double costae reaching to midleaf is newly reported from Vietnam. Its familial position in the Symphyodontaceae is newly proposed based on molecular analysis using ITS1&2 and trnL-F and supported by its morphology.