The Nyssaceae's a small family of flowering plants related to and often included within the dogwood family (Cornaceae). As most commonly circumscribed, the Nyssaceae includes three genera of trees, while a fourth genus has recently been transferred to the family (Averyanov & Hiep 2002): Nyssa, the tupelos: about 7-10 species in eastern North America and east to southeast Asia Camptotheca, the happy trees: two species in China Davidia, the dove tree, handkerchief tree, or ghost tree: one speci… (More on Nyssaceae)