Uebelmannia pectinifera var. horrida P.J.Braun in Kakteen And. Sukk. 35: 265. 1984
Uebelmannia pectinifera var. horrida in Kakteen And. Sukk. 35: 265. 1984
is basionym for Uebelmannia pectinifera subsp. horrida in Succulenta (Netherlands) 74: 135. 1995
is basionym for Uebelmannia horrida in Cactusinhabitat S. Amer. 2005/2010: 33. 2010