Phylogenetic trees. (A): Neighbor-joining tree based on subclade profiles. (B): Tree produced by MrBayes. In both trees F. perforate, and C. ellipsoidea (Trebouxiophyceae) were chosen as outgroup. Brackets indicate taxonomical groupings. Edges are annotated with bootstrap values, resp. percent posterior probabilities. Both trees show the same branching pattern concerning sister group relations of the Sphaeropleales, the Chlamydomonadales and the Cylindrocapsa-clade. Note that the Sphaeropleales (core Sphaeropleales plus Sphaeropleaceae) are supported by 59% resp. 70%.