Fig 3. Bayesian phylogenetic tree of snow-inhabiting Chloromonas spp. based on 340–1,128 base pairs of rbcL.

Each codon position was partitioned and unlinked (S4 Table). Specimens of field-collected “C. nivalis zygotes” are underlined. The operational taxonomic units not included in Fig 2 are highlighted in black. Corresponding posterior probabilities (0.95 or more) are shown at the top left. Numbers shown at the top right, bottom left, and bottom right indicate bootstrap values (50% or more) in the maximum likelihood, maximum parsimony, and neighbor-joining analyses, respectively.