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Pachyseris involuta

(Studer, 1877)

Colonies consist of whorls of narrow, unifacial, bifurcating fronds. Valleys are generally parallel to frond margins but are short and irregular. Centres are short, especially towards branch bases, where many are not elongated at all. There is almost no development of columellae.

Colour: Pale brown.

Habitat: Shallow reef environments.

Abundance: Rare.

Similar species: Pachyseris foliosa , Pachyseris rugosa

Taxonomic note: Source reference: Veron (2000). Taxonomic reference: Studer’s original description/specimens.

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Pachyseris involuta.  Indonesia.  A large colony of lobed plates.  Doug Fenner.

Pachyseris involuta.Indonesia.A large colony of lobed plates.Doug Fenner.

Pachyseris involuta.  Philippines.  Showing frond surface.

Pachyseris involuta.Philippines.Showing frond surface.