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Acropora polystoma

(Brook, 1891)

Colonies are irregular clumps or corymbose plates with tapered branches of similar length and shape. Axial corallites are small and exsert. Radial corallites are usually arranged in rows down branchlet sides. They are irregularly immersed to tubular, giving colonies a spiny appearance.

Colour: Cream, blue (which may photograph pink) or yellow.

Habitat: Upper reef slopes exposed to strong wave action.

Abundance: Uncommon.

Similar species: Acropora massawensis

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Veron and Wallace (1984), Wallace (1999). Additional identification guide: Veron (1986).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Acropora polystoma.  Papua New Guinea.  Large colony.  Charlie Veron.

Acropora polystoma.Papua New Guinea.Large colony.Charlie Veron.

Acropora polystoma.  Papua New Guinea.  Typically tapering branches.  Charlie Veron.

Acropora polystoma.Papua New Guinea.Typically tapering branches.Charlie Veron.

Acropora polystoma.  Papua New Guinea.  Small colony exposed to strong wave action.  Charlie Veron.

Acropora polystoma.Papua New Guinea.Small colony exposed to strong wave action.Charlie Veron.

Acropora polystoma.  Great Barrier Reef, Australia.  Spiny branches showing irregular shape and size of radial corallites.  Charlie Veron.

Acropora polystoma.Great Barrier Reef, Australia.Spiny branches showing irregular shape and size of radial corallites.Charlie Veron.

Acropora polystoma.  Great Barrier Reef, Australia.  Showing branch tip.

Acropora polystoma.Great Barrier Reef, Australia.Showing branch tip.

Acropora polystoma.  Great Barrier Reef, Australia.  Showing skeletal detail.

Acropora polystoma.Great Barrier Reef, Australia.Showing skeletal detail.

Acropora polystoma.  Great Barrier Reef, Australia.  Showing clump formation.

Acropora polystoma.Great Barrier Reef, Australia.Showing clump formation.

Acropora polystoma.  Great Barrier Reef, Australia.  Showing branch end.

Acropora polystoma.Great Barrier Reef, Australia.Showing branch end.

Acropora polystoma.  Great Barrier Reef, Australia.  Showing radial corallites.

Acropora polystoma.Great Barrier Reef, Australia.Showing radial corallites.

Acropora polystoma.  Great Barrier Reef, Australia.  Showing characteristic branching pattern.

Acropora polystoma.Great Barrier Reef, Australia.Showing characteristic branching pattern.