- Nyssaceae, family Nyssaceae, sour-gum family, tupelo family - a family of dicotyledonous trees of order Myrtales that includes the sour gum trees
--1 is a kind of dicot family, magnoliopsid family
--1 is a member of Myrtales, order Myrtales, Thymelaeales, order Thymelaeales
--1 has members: Nyssa, genus Nyssa