[chrisaggie]

Genus Anthelia Lamarck 1816: "Clusters of polyps all arising from a united stolon base that is soft, ribbon-like. Polyp pinnules in rows of 1-4 in number; slightly contractile, not retractile; some don't even respond to touch. Unlike Heteroxenia and Xenia species, Anthelia colonies branch at their base of attachment."

Genus Xenia Lamarck 1816: "Small cylindrical colonies (up to 4 cm in all dimensions typically), dome shaped. Sometimes branched, with polyps only at apical stems. One-shape polyps with varying capacity to retract, 1-6 pinnules on both sides (number of rows, pinnules species-specific). Some pulsate, some don't. Forty plus species, scattered over the Indo-Pacific. Fed on by similar appearing Nudibranchs of the genus Phyllodesmium."



If you look at the pictures the polyps do have the ability to retract, so it can't be anthelia, right?