Schistidium urnulaceum (C. Muell.) B. G. Bell, a species hitherto known from the sub-Antarctic island of South Georgia, is reported for the first time from King George Island, South Shetland Islands, in the Antarctic botanical zone. A description of the species together with illustrations, notes on habitat and a distribution map are provided. Taxonomic notes to assist in the identification of S. urnulaceum are also given.