Nowellia asperilobula sp. nov., from New Caledonia, is described as a new species of Nowellia Mitt. section Metanowellia, raising the total number of known species in the genus to eleven. The habitat of the new species and morphological features distinguishing it from the two other New Caledonian species in the genus, N. langii Pearson and N. pusilla Grolle, are addressed.
Cephaloziaceae, liverworts, New Caledonia, low mountain rainforest, Pacific region, new species.