Acanthocalycium spiniflorum f. violaceum (Werderm.) Donald in Ashingtonia 1: 116. 1975
Acanthocalycium spiniflorum f. violaceum in Ashingtonia 1: 116. 1975
is new combination for Echinopsis violacea in Notizbl. Bot. Gart. Berlin-Dahlem 11: 262. 1931