⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50138349, and has not been changed.
This name is a synonym of Echinopsis arachnacantha subsp. sulphurea (R.Vásquez) M.Lowry.
The record derives from Tropicos which reports it as a synonym (record 50138349) with original publication details: Succulenta (Netherlands) 53(6): 108 108 1974.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:142461-2.