Colonies bushy, with branches arising from horny nodes in whorls of 3 to 6; internodes solid, short (to 2 cm); polyps non-retractile.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith