Why was Anisophylleaceae once associated with Rhizophoraceae?

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In the context of botanical classification, the family Anisophylleaceae was formerly linked to or included within the family Rhizophoraceae due to historical taxonomic practices that relied on morphological similarities before the widespread use of modern DNA analysis.1

While Rhizophoraceae is now classified within the order Malpighiales, it was frequently associated with the order Myrtales in the past. The reclassification of these groups reflects the shift toward molecular-based systems, such as the Angiosperm Phylogeny Group (APG) system, which has clarified the evolutionary relationships of families like Anisophylleaceae, now placed within the order Cucurbitales.1