Taxonomic studies in Chiloscyphus Corda (Jungermanniales: Lophocoleaceae) based on nrITS sequences and morphology

摘要

Maximum parsimony and likelihood analyses of 40 Lophocoleaceae nrITS sequences and 6 Plagiochilaceae sequences (outgroup) lead to a robust phylogeny of Chiloscyphus. Four main lineages are assigned to as Chiloscyphus subgenera Chiloscyphus, Lophocolea, Connati and Notholophocolea. Chiloscyphus subgen. Connati is resolved sister to the remainder of this genus. Chiloscyphus subgenus Lophocolea is subdivided into sections Heterophylli (incl. sect. Semiteretes, syn. nov.), Lophocolea, Microlophocolea, and Novae-Zeelandiae. Five accessions of Chiloscyphus pallescens with a chromosome number of n = 18 form a robust monophyletic lineage that is placed sister to a well supported clade with 4 accessions of C. polyanthos [n = 9]. Chiloscyphus mandonii is placed in the synonymy of C. latifolius.