⚠ Version 1 of The Plant List has been superseded.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 Spiraea discolor in version 1.1 of The Plant List.

Spiraea discolor var. ariifolia (Sm.) S. Watson is a synonym of Holodiscus discolor (Pursh) Maxim.

This name is a synonym of Holodiscus discolor (Pursh) Maxim..

The record derives from Tropicos which reports it as a synonym (record 50213411) with original publication details: Bot. California 1: 170 170 1876.