Maximum Likelihood tree based on the <i>anaF</i> gene clusters of the five <i>Cuspidothrix issatschenkoi</i> strains included in this study.

<p><i>anaF</i> genes of <i>Anabaena</i> sp., <i>Oscillatoria</i> sp., <i>Cylindrospermum stagnale</i> are included in the tree. A homologous sequence of <i>Moorea producens</i> is used as outgroup. Bootstrap values above 50 are included. The scale bar indicates 2% sequence divergence.