Echinopsis densispina f. eburnea (Wessner) Buining in Sukkulentenkunde 7-8: 96. 1963 Echinopsis densispina f. eburnea (Wessner) Buining in Sukkulentenkunde 7-8: 96. 1963is new combination for Lobivia pectinifera var. eburnea Wessner in Kakteenkunde 1940: 15. 1940Taxon for this nameEchinopsis densispina f. eburnea (Wessner) Buining