Echinopsis ferox var. potosina (Werderm.) Rausch, Lobivia: 72. 1975 Echinopsis ferox var. potosina (Werderm.) Rausch, Lobivia: 72. 1975is new combination for Echinopsis potosina Werderm. in Notizbl. Bot. Gart. Berlin-Dahlem 11: 267. 1931Taxon for this nameEchinopsis ferox var. potosina (Werderm.) Rausch