Viburnum veitchii subsp. rotundifolium Viburnum glomeratum subsp. rotundifolium Viburnum glomeratum subsp. glomeratum Viburnum veitchii Viburnum veitchii subsp. magnificum Viburnum glomeratum var. rockii Viburnum glomeratum subsp. magnificum
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024