Abstract:
The liverwort Frullania hattorii sp. nov. (Jubulaceae) from Tasmania is described and illustrated. A diagnostic feature of this new species is the mammillose dorsal lobe surface, bearing a single, conical to conoidal protuberance per cell, a feature unusual for Frullania. A critical comparison is made between Frullania hattorii and two allied and common Australasian species, F. aterrima and F. rostrata.