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Symphyllia agaricia

Milne Edwards and Haime, 1849

Colonies are hemispherical to flat. Valleys are sinuous or straight, averaging 35 millimetres wide and are usually separated by a narrow groove. Walls have a thick fleshy appearance. Septa are thick and have large teeth. Columellae are usually in two rows.

Colour: Brown, green or red, usually with contrasting valleys and walls.

Habitat: Exposed upper reef slopes.

Abundance: Uncommon.

Similar species: Lobophyllia flabelliformis , Symphyllia hassi

Taxonomic note: Source reference: Veron (2000). Taxonomic reference: Veron and Pichon (1980). Additional identification guides: Veron (1986), Nishihira and Veron (1995).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Symphyllia agaricia.  Great Barrier Reef, Australia.  This species forms massive, hemispherical or flat colonies with large valleys.  Ed Lovell.

Symphyllia agaricia.Great Barrier Reef, Australia.This species forms massive, hemispherical or flat colonies with large valleys.Ed Lovell.

Symphyllia agaricia.  Dampier Archipelago, western Australia.  Showing the thick tough fleshy surface of polyps.  Charlie Veron.

Symphyllia agaricia.Dampier Archipelago, western Australia.Showing the thick tough fleshy surface of polyps.Charlie Veron.

Symphyllia agaricia.  Dampier Archipelago, western Australia.  Mouths are just discernible.  Charlie Veron.

Symphyllia agaricia.Dampier Archipelago, western Australia.Mouths are just discernible.Charlie Veron.

Symphyllia agaricia.  Great Barrier Reef, Australia.  Small colonies have the same surface characters as large ones.  Roger Steene.

Symphyllia agaricia.Great Barrier Reef, Australia.Small colonies have the same surface characters as large ones.Roger Steene.

Symphyllia agaricia.  Papua New Guinea.  This species forms massive, hemispherical or flat colonies with large valleys.  Neville Coleman.

Symphyllia agaricia.Papua New Guinea.This species forms massive, hemispherical or flat colonies with large valleys.Neville Coleman.

Symphyllia agaricia. Skeletal detail.  Geoff Kelly.

Symphyllia agaricia.Skeletal detail.Geoff Kelly.

Symphyllia agaricia.  Great Barrier Reef, Australia.  Showing whole colony.

Symphyllia agaricia.Great Barrier Reef, Australia.Showing whole colony.

Symphyllia agaricia.  Great Barrier Reef, Australia.  Showing colony surface.

Symphyllia agaricia.Great Barrier Reef, Australia.Showing colony surface.

Symphyllia agaricia.  Great Barrier Reef, Australia.  Showing skeletal detail.

Symphyllia agaricia.Great Barrier Reef, Australia.Showing skeletal detail.

Symphyllia agaricia.  Great Barrier Reef, Australia.  Showing valleys.

Symphyllia agaricia.Great Barrier Reef, Australia.Showing valleys.