LSU rDNA phylogeny. Gamma-corrected maximum likelihood tree (-lnL = 8068.27939, α = 0.509, 4 rate categories) inferred using the GTR model of substitution on an alignment of 36 LSU rDNA sequences and 855 unambiguously aligned sites. Numbers at the branches denote bootstrap percentages using maximum likelihood – GTR (top) and Bayesian posterior probabilities – GTR (bottom). Black dots on branches denote bootstrap percentages and posterior probabilities of 95% or higher. Sequences derived from this study are highlighted in black boxes and the image/s in Fig 1 representing the taxon are cited. I = morphotype I of the genus Warnowia; c = containing chloroplasts.