| Name | Hydrangea arborescens subsp. radiata (Walter) McClintock |
| Authorship | (Walter) McClintock |
| Rank | Subspecies |
| Placed in | Hydrangea arborescens Linnaeus |
| Citation | 1956 J. Arnold Arbor. 37(4): 373 |
| Holdings | 33 Specimens held in the Harvard University Herbaria identified as Hydrangea arborescens subsp. radiata (Walter) McClintock |
| Identification made in | [no date] (17), 1950 (12), 1954 (2), 1987 (1), 1988 (1) |