Doodia media

Doodia media, also known as rasp fern (or "pukupuku" in Māori), is a fern species in the family Blechnaceae. The species was formally described by botanist Robert Brown in 1810. Distribution of the species includes New Zealand's North Island and the upper part of the South Island (Nelson and Marlborough). It is also found in Australia and Lord Howe Island.
Young fronds contain flavonoids that protect them from ultraviolet radiation and give them a pink colour.
Phylogenic studies have shown that the genus "Doodia" is embedded within the paraphyletic genus "Blechnum". Christenhusz "et al.", 2011, therefore reassigned all "Doodia" species to "Blechnum". was transferred to and ("Doodia australis") was transferred to .