Bayesian phylogeny of Millepora colonies used for morphological analyses (based on COI sequences). Posterior probabilities over 50% are shown. Shapes represent morphotypes: square, M. complanata; upside triangle, M. alcicornis branched morph; downside triangle, M. alcicornis encrusted morph; circle, M. striata; diamond, M. squarrosa. Names of specimens have been color-coded: red, M. complanata; blue, M. alcicornis branched morph; green, M. alcicornis encrusted morph. The hydrozoan Crapedacusta sp. is used as outgroup [GenBank:FJ423620].