⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50209511, with some changes.

Hydrangea ashei Harb. is a synonym of Hydrangea arborescens subsp. discolor (Ser.) E.M. McClint.

This name is a synonym of Hydrangea arborescens subsp. discolor (Ser.) E.M. McClint..

The record derives from Tropicos which reports it as a synonym (record 50209511) with original publication details: Amer. Midl. Naturalist 11(5): 256-257 256 1928.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:125050-2.