Widespread common fern from lower-mid to high altitudes on Raoul Island. Terrestrial ferns with shortly creeping rhizome. Name seems to not be on Nature Watch NZ. This species was described by Brownsey & Perrie (2012), see also de Lange (2012) for additional information and images.
Perrie, L.R.; Brownsey, P.J. 2012: Lastreopsis kermadecensis, a new fern species from Raoul Island in the Kermadec Islands, New Zealand, with notes on L. pacifica. New Zealand Journal of Botany 50: 29-36.
de Lange, P.J. 2012: Lastreopsis kermadecensis. http://www.nzpcn.org.nz/flora_details.aspx?ID=6742