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Which Caryophyllales families are native only to Madagascar?

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Caryophyllales Pink carnation flowers (*Dianthus caryophyllus*).

Within the order Caryophyllales, the following families are endemic to Madagascar:

Asteropeiaceae: This family consists of eight species.1
Physenaceae: This family comprises two species.1
Barbeuiaceae: This family contains a single species.1

These families are restricted to this specific geographical area, distinguishing them from other families within the order that have broader or different distributions. While other families such as Kewaceae are found in Madagascar, they are not exclusive to the island, as they also occur in southern Africa.1