⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-325189, and has not been changed.
 Sisyrinchium rigidum 
	is a synonym
 of Sisyrinchium tinctorium
	Sisyrinchium rigidum 
	is a synonym
 of Sisyrinchium tinctorium 
This name is a synonym of Sisyrinchium tinctorium .
The record derives from iPlants which reports it as a synonym (record 325189) with original publication details: Neue Allg. Deutsche Garten- Blumenzeitung 6: 415 1850.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:95761-3.