⚠ Version 1 of The Plant List has been superseded.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

Spiraea caespitosa Nutt. is a synonym of Petrophytum caespitosum (Nutt.) Rydb.

This name is a synonym of Petrophytum caespitosum (Nutt.) Rydb..

The record derives from Tropicos which reports it as a synonym (record 50004166) with original publication details: Fl. N. Amer. 1(3): 418 418 1840.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:242391-2.