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Palauastrea ramosa

Yabe and Sugiyama, 1941

Colonies are branching, consisting of anastomosing blunt-ended, non-tapering branches. Corallites are immersed, circular, with blunt style-like columellae and two unequal cycles of septa that do not fuse with the columella. The coenosteum is covered by fine spinules. Tentacles are sometimes extended during the day.

Colour: Cream or pinkish-brown.

Habitat: Restricted to turbid water and sandy substrates in Australia but found on upper reef slopes in equatorial countries.

Abundance: Uncommon in Australia, sometimes common in equatorial regions.

Similar species: Madracis mirabilis , Porites cylindrica

Taxonomic note: Taxonomic note: This species is divisible into several smaller semi-distinct taxonomic units. Source reference: Veron (2000). Taxonomic references: Veron and Pichon (1976), Veron (1992). Additional identification guides: Veron (1986), Nishihira and Veron (1995).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Palauastrea ramosa.  null.  A large hemispherical colony in shallow water.  Ed Lovell.

Palauastrea ramosa. null. A large hemispherical colony in shallow water. Ed Lovell.

Palauastrea ramosa.  null.  An irregular colony on a lower reef slope.  Ed Lovell.

Palauastrea ramosa. null. An irregular colony on a lower reef slope. Ed Lovell.

Palauastrea ramosa.  null.  With polyps extended during the day.  Ed Lovell.

Palauastrea ramosa. null. With polyps extended during the day. Ed Lovell.

Palauastrea ramosa.  null.  Looking superficially like Porites cylindrica.  Ed Lovell.

Palauastrea ramosa. null. Looking superficially like Porites cylindrica. Ed Lovell.

Palauastrea ramosa.  null.  Detail of a branch.  Ed Lovell.

Palauastrea ramosa. null. Detail of a branch. Ed Lovell.

Palauastrea ramosa.  null.  With polyps extended during the day.  Ed Lovell.

Palauastrea ramosa. null. With polyps extended during the day. Ed Lovell.

Palauastrea ramosa. Skeletal detail.  Geoff Kelly.

Palauastrea ramosa. Skeletal detail. Geoff Kelly.

Palauastrea ramosa.  Great Barrier Reef, Australia.  Showing branches.

Palauastrea ramosa. Great Barrier Reef, Australia. Showing branches.

Palauastrea ramosa.  Great Barrier Reef, Australia.  Showing corallites.

Palauastrea ramosa. Great Barrier Reef, Australia. Showing corallites.

Palauastrea ramosa.  Great Barrier Reef, Australia.  Showing branching pattern.

Palauastrea ramosa. Great Barrier Reef, Australia. Showing branching pattern.

Palauastrea ramosa.  Great Barrier Reef, Australia.  Showing branches.

Palauastrea ramosa. Great Barrier Reef, Australia. Showing branches.

Palauastrea ramosa.  Ryukyu Islands, Japan.  Showing branching pattern.

Palauastrea ramosa. Ryukyu Islands, Japan. Showing branching pattern.