Hierarchical cluster of cnidarian species: (A) microsatellite coverage, (B) mean repeat length. Red box indicate groups with bootstrap values higher than 95%. BP (green) = Bootstrap values and AU (red) = approximate unbiased p-values. * Indicate species with fast mtDNA mutation rate. Symbiotic state is indicated with +/- symbols (+ symbiotic, - non-symbiotic). Clustering was performed on Euclidian distances using the Ward cluster method.