Echinopsis ×droegeana R.Mey. ex Britton & Rose, Cactaceae 3: 67. 1922 Echinopsis ×droegeana R.Mey. ex Britton & Rose, Cactaceae 3: 67. 1922Taxon for this nameEchinopsis ×droegeana R.Mey. ex Britton & Rose, Cactaceae 3: 67. 1922