Whoever told you that was incorrect.
Bear in mind that most Acropora and Montipora species ID’s are approximate. There are likely hundreds of occult Acropora (and likely Montipora) species that will require sequencing data to differentiate. Vernon’s texts are awesome but should be viewed as species approximations rather than definitive. The process of Acropora genotyping is currently going on in Australia and will likely impact coral imports in the future.
Bear in mind that most Acropora and Montipora species ID’s are approximate. There are likely hundreds of occult Acropora (and likely Montipora) species that will require sequencing data to differentiate. Vernon’s texts are awesome but should be viewed as species approximations rather than definitive. The process of Acropora genotyping is currently going on in Australia and will likely impact coral imports in the future.