⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Hydrangea aspera in version 1.1 of The Plant List.
This name is a synonym of Hydrangea sargentiana .
The record derives from Tropicos which reports it as a synonym (record 50209427
) with original publication details: J. Arnold Arbor. 37: 373 373 1956.