Colonies have thick laminar bases and blunt-ended columns which occasionally branch. Valleys are meandroid and sinuous. Septa are thick and fuse irregularly with each other and with the columellae. Columellae are composed of a few thick septal teeth. Tentacles are usually extended only at night and are long, tapering, and of uniform length.
Usually cream or yellow-brown.
Usually found in partly turbid water such as around fringing reefs and in lagoons.