Characters: Colonies are laminar, in whorls or tiers or vase-shaped. They are commonly over one metre across. Corallites are enclosed in rectangular pockets formed between radiating ridges and low walls which are parallel to frond margins. Septo-costae are moderately exsert and alternate.
Colour: Usually pale brown or yellowish, sometimes with white margins.
Similar Species: Leptoseris yabei is closest to L. mycetoseroides but is readily distinguished from all other species by having corallites in rectangular pockets.
Habitat: Usually found on flat substrates.
Abundance: Uncommon but conspicuous.
Taxonomic Note: Possibly warrants a separate generic designation.
Taxonomic References: Pillai and Scheer (1976); Dinesen (1980); Veron and Pichon (1980);
Identification Guides: Veron (1986a); Sheppard and Sheppard (1991); Nishihira and Veron (1995); Pillay, Terashima, Venkatasami et al. (2002); Turak and DeVantier (2011b);
