⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-2706877, and has not been changed.

Ceanothus rigidus var. albus Roof is a synonym of Ceanothus cuneatus subsp. rigidus (Nutt.) C.L.Schmidt

This name is a synonym of Ceanothus cuneatus subsp. rigidus (Nutt.) C.L.Schmidt.

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Four Seasons 2(3): 17 1967.