GUIRY, Michael D., James N. NORRIS, Suzanne FREDERICQ, & Carlos Frederico D. GURGEL 2018 (Dec. 11) Crassiphycus Guiry, Gurgel, J.N.Norris & Fredericq, gen. nov., a replacement name for Crassa Gurgel, J.N.Norris & Fredericq, nom. inval. (Gracilariaceae, Rhodophyta), with some additional nomenclatural notes Notulae algarum 82: 1-4