Echinocereus acifer var. tenuispinus Jacobi in Rümpler, Handb. Cacteenk., ed. 2: 798. 1885 Echinocereus acifer var. tenuispinus Jacobi in Rümpler, Handb. Cacteenk., ed. 2: 798. 1885Taxon for this nameEchinocereus acifer var. tenuispinus Jacobi
