⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-369414, with some changes.
This name is a synonym of Forsythia × intermedia Zabel.
The record derives from WCSP which reports it as a synonym (record 369414) with original publication details: Späths Katal. 1899-1900: 1900.