Pyrophyllon subtumens

Pyrophyllon subtumens is an obligate red algal epiphyte of "Durvillaea" southern bull-kelp, and is endemic to New Zealand.
Taxonomy.
The species belongs to a monotypic genus, which is sister to "Childophyllon" - a genus containing another red algal epiphyte of other seaweeds in New Zealand. The species was previously recognised as "Porphyra subtumens" before being reclassified.
Description.
The species can be found growing on all mainland New Zealand species of "Durvillaea".