Western United States, Alaska, California
Hybrid origin, Mexico, Central America, South America
Nemophila menziesii var. atomaria, Nemophila menziesii var. integrifolia, Nemophila menziesii var. menziesii
Bigleaf hydrangea, Hortensia, Smooth hydrangea, Oakleaf hydrangea, Annabelle
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
21,22