⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-443149, with some changes.

Sitanion rigidum var. californicum (J.G.Sm.) Smiley is a synonym of Sitanion hystrix (Nutt.) J.G.Sm.

This name is a synonym of Sitanion hystrix (Nutt.) J.G.Sm..

The record derives from WCSP which reports it as a synonym (record 443149) with original publication details: Univ. Calif. Publ. Bot. 9: 99 1921.