Two moss species of the genus Pottia collected from the vicinity of Syowa Station, East Antarctica

[摘要] Taxonomic reviews were made on two moss species, Bryum antarcticum HOOK. f. et WILS. and so-called "Desmatodon sp." collected from the Syowa Station area, East Antarctica. Bryum antarcticum was concluded to be synonymous with Pottia heimii (HEDW.) HAMPE from the study on type specimen and matured sporophytes which were found in a collection from the Syowa Station area. "Desmatodon sp." should be assigned to Pottia austro-georgica CARD. which has been known in the neighboring islands of the Antarctic Peninsula. P. austro-georgica is recorded from the South Shetland Islands for the first time.