Harrisia gracilis var. aboriginum (Small ex Britton & Rose) D.B.Ward in Novon 14: 366. 2004 Harrisia gracilis var. aboriginum (Small ex Britton & Rose) D.B.Ward in Novon 14: 366. 2004is new combination for Cereus aboriginum (Small ex Britton & Rose) Little in Amer. Midl. Naturalist 33: 495. 1945Taxon for this nameHarrisia gracilis var. aboriginum (Small ex Britton & Rose) D.B.Ward