Remarks: similar to Plumularia setacea (Linnaeus, 1758), but recently suggested to be distinct (Schuchert 2013). Distribution in South America: polyp—Pacific Ocean, Ecuador, from 0.1°S to 1.1°S in Galápagos Archipelago, at 14.25°S 76.17°W in Bahia Independencia, Peru, at 14.29°S 76.19°W in Isla Viejas, Chile, at Valparaíso (Fraser 1938a, 1938b, 1939, 1948; Jäderholm 1903 p. 291–292; Calder et al. 2003).
Habitat: polyp—from 9 to 128m depth, on algae (Fraser 1938a, 1938b, 1948; Jäderholm 1903 p. 291–292; Calder et al. 2003).