Cephalocereus scoparius Holotype: Mexico. Veracruz, “Nahe bei La Soledad”, Poselger s.n. (not located) Neotype: Mexico. Veracruz: cerca de Jalapa, 1957, H. Bravo Hollis s.n. (MEXU 70513) Mexico. Oaxaca: at base of volcanic hill a few kilometres east of Juchitán, 26 Jan 1947, E. Y. Dawson 3007 (syntypes: RSA)