Echinopsis densispina f. versicolor (Wessner) Buining in Sukkulentenkunde 7-8: 95. 1963 Echinopsis densispina f. versicolor (Wessner) Buining in Sukkulentenkunde 7-8: 95. 1963Taxon for this nameEchinopsis densispina f. versicolor (Wessner) Buining