Heliocereus ×violaceus (Mast.) Doweld in Sukkulenty 4: 42. 2002 ["2001"] Heliocereus ×violaceus (Mast.) Doweld in Sukkulenty 4: 42. 2002 ["2001"]Taxon for this nameHeliocereus ×violaceus (Mast.) Doweld in Sukkulenty 4: 42. 2002 ["2001"]