1) Dicot family 2) Family nyssaceae 3) Magnoliopsid family 4) Sour-gum family 5) Tupelo family 
Nyssaceae was a small family of flowering trees now included within the dogwood family (Cornaceae). Nyssaceae commonly included the following genera: 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 an...
[n] - a family of dicotyledonous trees of order Myrtales that includes the sour gum trees
family Nyssaceae noun a family of dicotyledonous trees of order Myrtales that includes the sour gum trees