Abstract
An Arctic montane liverwort, Bucegia romanica, is reported to be in China and represents the first record of both the genus Bucegia and the species, B. romanica, in eastern Asia. Morphological descriptions, taxonomic notes, ecological information, and color illustrations are provided. Since only male populations were found during the study, the descriptions and photographs are based of male plants. Bucegia romanica can be readily distinguished from other members of Marchantiaceae by the following combination of characteristics: (1) spongiose areas on the dorsal side of the thallus, (2) dichotomously and apically innovative branching pattern, (3) each ventral scale with up to two appendages, and (4) unlobed male receptacles.
