⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-2855688, with some changes.

Hydrangea integerrima (Hook. & Arn.) Engl. is a synonym of Hydrangea serratifolia (Hook. & Arn.) Phil.f.

This name is a synonym of Hydrangea serratifolia (Hook. & Arn.) Phil.f..

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Nat. Pflanzenfam. 3(2a): 76 1891.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:125064-2.