Molecular and morphological evidence reveals a new fern species of (Aspleniaceae) from south and southwestern China.

, a new fern species of the subclade of (Aspleniaceae) from south and southwestern China was described. Molecular phylogenetic analyses and morphological observations of and related species clearly indicated that this is a distinct taxonomic entity. Phylogenetically, was confirmed to represent a diverging lineage in the subclade of and was closely related to one lineage that includes accessions identified as , and . Morphologically, can be distinguished by the combination of its lamina base truncate, stipe not shiny and with color of reddish brown to dark brown, and pinna marginal teeth that are not sharp, but blunt or rounded. A complete species description and comparison with related species in the subclade were provided. The holotype of was designated.