Delesseriaceae Bory, 1828 family accepted

Inkyuleeaceae H.-G. Choi, Kraft, H.-S. Kim, Guiry & G.W. Saunders, 2008 family accepted

Sarcomeniaceae Womersley, 2003 family accepted

Ptilocladiopsis Berthold, 1882 genus accepted

Ceramiaceae Dumortier, 1822 family accepted

Dasyaceae Kützing, 1843 family accepted

Callithamniaceae Kützing, 1843 family accepted

Rhodomelaceae J.E. Areschoug, 1847 family accepted

Spyridiaceae family accepted

Wrangeliaceae J. Agardh, 1851 family accepted