| Meaning | 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. |
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| Member of | Hydrangeaceae, family Hydrangeaceae, hydrangea family | sometimes included in the family Saxifragaceae |
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| Members | climbing hydrangea, Hydrangea anomala | deciduous climber with aerial roots having white to creamy flowers in fairly flat heads |
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| climbing hydrangea, Hydrangea petiolaris | deciduous climber with aerial roots having large flat flower heads |
| fall-blooming hydrangea, Hydrangea paniculata | deciduous shrub or small tree with pyramidal flower clusters |
| hortensia, Hydrangea macrophylla hortensis | deciduous shrub bearing roundheaded flower clusters opening green and aging to pink or blue |
| hydrangea | Any of various deciduous or evergreen shrubs of the genus Hydrangea |
| wild hydrangea, Hydrangea arborescens | deciduous shrub with creamy white flower clusters |
| Broader | rosid dicot genus | A genus of dicotyledonous plants |
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| Spanish | genus hydrangea |
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| Catalan | genus hydrangea |
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