⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50110854, and has not been changed.
This name is a synonym of Zuckia brandegeei var. arizonica (Standl.) S.L. Welsh.
The record derives from Tropicos which reports it as a synonym (record 50110854) with original publication details: J. Wash. Acad. Sci. 5(2): 58-59 58 1915.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:287216-2.