1. Department of Biology University of Louisiana at Lafayette Lafayette Louisiana 70504‐3602 USA
2. Programa de Pós‐Graduação em Biologia de Fungos, Algas e Plantas Departamento de Botânica Universidade Federal de Santa Catarina Florianópolis Santa Catarina 88040‐900 Brazil
3. Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) Escuela de Biología Universidad de Costa Rica San Pedro San José 11501‐2060 Costa Rica
4. Phycology Research Group and Center for Molecular Phylogenetics and Evolution Ghent University Krijgslaan 281 (S8) B‐9000 Ghent Belgium
5. Department of Botany, NHB166 National Museum of Natural History Smithsonian Institution Washington District of Columbia 20013‐7012 USA
6. Center for Marine Science University of North Carolina at Wilmington Wilmington North Carolina 28403 USA