Rhodomelaceae J.E. Areschoug, 1847 family accepted

Spyridiaceae family accepted

Wrangeliaceae J. Agardh, 1851 family accepted

Ptilocladiopsis Berthold, 1882 genus accepted

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

Dasyaceae Kützing, 1843 family accepted

Callithamniaceae Kützing, 1843 family accepted

Ceramiaceae Dumortier, 1822 family accepted