1. Botany Department; National Museum of Natural History; Smithsonian Institution; MRC 166 PO Box 37012 Washington District of Columbia USA
2. Irish Seaweed Research Group; Ryan Institute; National University of Ireland; University Road Galway Ireland
3. Dipartimento di Scienze della Vita e dell'Ambiente; Università Politecnica delle Marche; Via Brecce Bianche Ancona 60131 Italy
4. BIOCOST Research Group; Departamento de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía; Facultade de Ciencias; Universidade da Coruña; Campus de A Coruña A Coruña 15071 Spain
5. Equipe Exploration, Espèces et Evolution; Institut de Systématique, Evolution, Biodiversité; UMR 7205 ISYEB CNRS, MNHN, UPMC, EPHE; Muséum National d'Histoire Naturelle (MNHN); Sorbonne Universités; 57 rue Cuvier CP 39 Paris 75005 France
6. Phycology Research Group; Ghent University; Krijgslaan 281, Building S8 Ghent 9000 Belgium
7. Department of Biology and Herbarium; University of North Carolina, Chapel Hill; Coker Hall CB 3280 Chapel Hill North Carolina 27599-3280 USA