What is "nyssaceae"

Nyssaceae is a family of flowering trees formerly included in the dogwood family ( Cornaceae) Nyssaceae is composed of 37 known species in the following five genera:

• 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 species in central China
• Diplopanax: two species in southern China and Vietnam
• Mastixia: about nineteen species in Southeast Asia

At least one other extinct genus Mastixicarpum, very similar to Diplopanax, is known from fossil evidence.

In some treatments, Davidia is split off into its own family, the Davidiaceae. Diplopanax and Mastixia are also sometimes separated into the family Mastixiaceae.