⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-5104708, with some changes.
This name is a synonym of Frailea gracillima (Lem.) Britton & Rose.
The record derives from Tropicos which reports it as a synonym (record 5104708) with original publication details: Monatsschr. Kakteenk. 10: 16 16 1900.