Colonies may be over one metre across and consist of compacted, vertical, bifacial laminae up to 0.6 metres high together with horizontal basal laminae. Some colonies consist only of vertical laminae or (rarely) only of horizontal laminae. Corallites are widely spaced, flush with the surface and are distributed irregularly. Septo-costae are prominent and parallel from the base to the margins of fronds. Columellae are a loose aggregation of spines.
Always yellowish-cream with dark basal parts and pale peripheral parts.
Shallow reef environments protected from wave action and where the water is slightly turbid.
Taxonomic note: Pectinia maxima was formerly known from a single specimen, placed in the genus Echinophyllia. Source reference: Veron (2000). Taxonomic reference: Moll and Borel-Best (1984, as Echinophyllia maxima).
displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Pectinia maxima.Ryukyu Islands, Japan.Colonies usually consist of loosely aggregated upright fronds.Charlie Veron.
Pectinia maxima.Ryukyu Islands, Japan.Colony with horizontal basal laminae.Charlie Veron.
Pectinia maxima.Philippines.Colonies occasionally consist primarily of horizontal laminae, in which case they may resemble P. lactuca.Charlie Veron.
Pectinia maxima.Philippines.Detail of a frond.Charlie Veron.