Fawcett, S. & A.R. Smith. 2021. A generic classification of the Thelypteridaceae. Sida, Bot. Misc. 59. BRIT Press,
Fort Worth Botanic Garden | Botanical Research Institute of Texas, U.S.A. (Link)
"Pakau is a monotypic genus erected by Fawcett & Smith (2021) to accommodate Pneumatopteris pennigera. Pakau differs from Pneumatopteris by having exindusiate sori, by the presence of costal scales, and by the absence of rudimentary proximal pinnae."
Unintended disagreements occur when a parent (B) is
thinned by swapping a child (E) to another part of the
taxonomic tree, resulting in existing IDs of the parent being interpreted
as disagreements with existing IDs of the swapped child.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.
"Pakau is a monotypic genus erected by Fawcett & Smith (2021) to accommodate Pneumatopteris pennigera. Pakau differs from Pneumatopteris by having exindusiate sori, by the presence of costal scales, and by the absence of rudimentary proximal pinnae."
https://www.nzpcn.org.nz/flora/species/pakau-pennigera/