| Noun | 1. | Hydrangeaceae - sometimes included in the family Saxifragaceae rosid dicot family - a family of dicotyledonous plants order Rosales, Rosales - in some classifications this category does not include Leguminosae genus Hydrangea - type genus of Hydrangeaceae; large genus of shrubs and some trees and vines with white or pink or blue flower clusters; sometimes placed in family Saxifragaceae genus Carpenteria - one species; sometimes placed in family Saxifragaceae Decumaria, genus Decumaria - small genus of woody climbers with adhesive aerial roots; sometimes placed in family Saxifragaceae genus Deutzia - genus of ornamental mostly deciduous shrubs native to Asia and Central America; widespread in cultivation; sometimes placed in family Saxifragaceae Philadelphaceae, subfamily Philadelphaceae - one genus; usually included in family Hydrangeaceae genus Schizophragma, Schizophragma - small genus of deciduous climbing and creeping shrubs with white flowers in flat clusters; sometimes placed in family Saxifragaceae |