Currently accepted species and new combinations in Jamesonielloideae (Adelanthaceae, Jungermanniales)

Based on available molecular and morphological evidence we present a taxonomic synopsis of Jamesonielloideae. Cryptochila, Jamesoniella and Roivainenia are synonymized with Syzygiella and Anomacaulis is treated as a synonym of Cuspidatula. Syzygiella is divided into five subgenera. Twenty new combinations are proposed.