Ruschia haworthii H.Jacobsen & G.D.Rowley in Natl. Cact. Succ. J. 28: 6. 1973 Ruschia haworthii H.Jacobsen & G.D.Rowley in Natl. Cact. Succ. J. 28: 6. 1973Taxon for this nameRuschia haworthii H.Jacobsen & G.D.Rowley in Natl. Cact. Succ. J. 28: 6. 1973