Synonyms: Hortensia chinensis (homotypic); Hortensia chinensis var. yayeyamensis (homotypic); Hortensia kawagoeana (homotypic); Hortensia kawagoeana var. grosseserrata (homotypic); Hydrangea angustifolia; Hydrangea angustipetala; Hydrangea angustipetala major; Hydrangea angustipetala var. major; Hydrangea angustisepala; Hydrangea chinensis var. grosseserrata (homotypic); Hydrangea chinensis var. yayeyamensis (homotypic); Hydrangea chloroleuca; Hydrangea formosana; Hydrangea glabrifolia; Hydrangea grosseserrata (homotypic); Hydrangea grossiserrata; Hydrangea jiangxiensis; Hydrangea kawagoeana; Hydrangea kawagoeana var. grosseserrata; Hydrangea macrosepala; Hydrangea obovatifolia; Hydrangea pottingeri; Hydrangea pubiramea; Hydrangea pubiramea var. parvifolia; Hydrangea scandens chinensis; Hydrangea scandens var. grosseserrata; Hydrangea stenophylla; Hydrangea subferruginca; Hydrangea subferruginea; Hydrangea umbellata (heterotypic); Hydrangea yayeyamensis (homotypic)