Jannaschia helgolandensis Wagner-Döbler et al. 2003 Wagner-Döbler I. Rheims H. Felske A. Pukall R. Tindall B.J. Jannaschia helgolandensis gen. nov., sp. nov., a novel abundant member of the marine Roseobacter clade from the North Sea. 2003 53 3 731 738 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.02377-0 12807194