Micranthocereus violaciflorus Buining in Kakteen And. Sukk. 20: 129. 1969 Micranthocereus violaciflorus Buining in Kakteen And. Sukk. 20: 129. 1969Taxon for this nameMicranthocereus violaciflorus Buining in Kakteen And. Sukk. 20: 129. 1969