1. Kobe University Research Center for Inland Seas, Rokkodai, Nadaku, Kobe 657-8501, Japan
2. Ehime Botanical Club, Ehime Prefectural Science Museum, Niihama 792-0060, Japan
3. Department of Phycology, Tokyo University of Marine Science and Technology, Shinagawa, Tokyo 108-8477, Japan
4. Bezhin Rosko, 40 rue des pêcheurs, Santec 29250, France