⚠ Version 1.1 of The Plant List has been superseded and should no longer be used.
The new version is available at http://www.worldfloraonline.org/tpl/rjp-6247. The new version is enhanced, using more data sources including Taxonomic Expert Networks and will be more frequently updated.
This name is a synonym of Spiraea splendens .
The record derives from RJP (data supplied on ) which reports it as a synonym (record 6247) with original publication details: Vascular Plants of the Pacific Northwest Vascular Plants of the Pacific Northwest; 1955 192, f.pg.195 1961.
This name record (from RJP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Spiraea densiflora in version 1 of The Plant List.