Key ex Copeland 1949, Philip. J. Sci. 78:28.
Species in Papuasia
|1a.||Sterile segments greater than 1 mm wide; sori long||P. radula|
|Sterile segmetns less than 1 mm wide; sori short||P. lamiana|
Taking a broad view of species, both the Papuasian reperesntatives could be considered part of the New Zealand Paesia scaberula.