Cephalocereus tweedyanus Britton & Rose, Cactaceae 2: 54. 1920

is basionym for Pilocereus tweedyanus (Britton & Rose) Backeb., Kaktus-ABC: 334. 1936 ["1935"]

is basionym for Cereus tweedyanus (Britton & Rose) Werderm. in Backeberg, Neue Kakteen: 71. 1931

is basionym for Pilosocereus tweedyanus (Britton & Rose) Byles & G.D.Rowley in Cact. Succ. J. Gr. Brit. 19(3): 69. 1957

Type: Lectotype: Ecuador. Vicinity of Santa Rosa, 17–18 October 1918, Rose & Rose 23494 (US00037353, isolectotypes A00061810, LE, NY00120569)1

Taxon for this name

1. Zappi, D. 1994: Pilosocereus (Cactaceae): The genus in Brazil. – Succulent Plant Research 3: 1-160