[2] In later publications, Linnaeus divided bryozoans into more than one genus, and so the species came to be called Flustra foliacea.

[4] It differs from the superficially similar Securiflustra securifrons by the tendency of the frond branches to become markedly wider towards the tip.

[4] Flustra foliacea has a wide distribution in the north Atlantic Ocean, on both the European and American sides.

Such epibionts include other bryozoa such as Crista eburnea, hydroids, sessile polychaete worms and the porcelain crab Pisidia longicornis.

[7] Flustra foliacea colonies only grow in spring and summer, which can result in visible annual growth rings.