c, e North America, Mexico, Central America (Costa Rica, Panama), e Asia.
Genera 2, species ca. 15 (1 genus, 5 species in the flora).
Taxonomic opinions about the status and circumscription of the Nyssaceae have varied. Nyssa and the small eastern Asian genera Camptotheca Decaisne and Davidia Baillon sometimes have been included in an expanded Cornaceae, a view supported by earlier phylogenetic studies (Xiang Q. Y. et al. 1998). The narrower circumscription used here, with the family comprising only Camptotheca and Nyssa but still close to Cornaceae, follows R. H. Eyde (1966) and is supported by phylogenetic studies by Xiang et al. (2011).