Pachycereus (A. Berger) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 420, 1909

Pachycereus aragonii (F.A.C. Weber) P.V. Heath, Calyx, 2 (3): 106: 1992

Pachycereus aragonii v. palmatus (Weber) P.V. Heath, Calyx, 2 (3): 106: 1992

Pachycereus calvus (Engelmann) Britton & Rose, Contrib. U. S. Nat. Herb. 12. 420, 1909

Pachycereus chrysomallus (Lemaire) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 421, t. 66, 1909

Pachycereus columna-trajani (Karwinski) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 421, 1909

Pachycereus foetidus (Miranda) P.V. Heath, Calyx, 2 (3): 108: 1992

Pachycereus fulviceps (F.A.C. Weber ex K. Schumann) D.R. Hunt, Bradleya; Yearbook of the British Cactus and Succulent Society 9: 89, 1991

Pachycereus gatesii (M.E. Jones) D.R. Hunt, Bradleya; Yearbook of the British Cactus and Succulent Society 9: 89, 1991

Pachycereus gaumeri Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 2: 71, 1920

Pachycereus gigas (Backeberg) Backeberg, Die Cactaceae 4: 2154, 1960

Pachycereus glaucus  

Pachycereus grandis Rose, Contributions from the U. S. National Herbarium 12 (10): 421, 1909

Pachycereus grandis v. gigas Backeberg, Beitrage zur Sukkulentenkunde und -pflege 1: 2, 1941

Pachycereus hollianus (A. Weber) F. Buxbaum, Bot. Stud., Heft 12 (Entwickl. Trib. Pachycereae) 19, 99, 1961

Pachycereus hollianus f. cristatus P.V. Heath, Calyx, 2 (3): 106, 1992

Pachycereus lepidanthus (Eichlam) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 2: 76, 1920

Pachycereus marginatus (DC.) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 421-422, 1909

Pachycereus marginatus f. gibbosus (J.A. Purpus) P.V. Heath, Calyx, 2 (3): 106: 1992

Pachycereus marginatus v. gemmatus (Pfeiffer) P.V. Heath, Calyx, 2 (3): 106: 1992

Pachycereus marginatus v. oaxacensis (Backeberg) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus militaris (Audot) D.R. Hunt, Calyx, 2 (3): 108: 1992

Pachycereus orcuttii (Brandegee) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 422, 1909

Pachycereus pecten-aboriginum (Engelmann ex S. Watson) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 422, 1909

Pachycereus pecten-aboriginum ssp. tehuantepecanus (T. MacDougall & H. Bravo Hollis) P.V. Heath, Calyx 2 (3): 107, 1992

Pachycereus pecten-aboriginum v. pecten-aboriginum  

Pachycereus pringlei (S. Watson) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 422, 1909

Pachycereus pringlei f. calvus (J.M. Coulter) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus pringlei f. constrictus P.V. Heath, Calyx, 2 (3): 107, 1992

Pachycereus pringlei f. cristatus P.V. Heath, Calyx, 2 (3): 107, 1992

Pachycereus pringlei f. gibbosus P.V. Heath, Calyx, 2 (3): 107, 1992

Pachycereus queretarensis (F.A.C. Weber) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 422, 1909

Pachycereus ruficeps (F.A.C. Weber) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 2: 75, 1920

Pachycereus schottii (Engelmann) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus schottii f. mieckleyanus (Weingart) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus schottii f. monstrosus (H.E. Gates) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus schottii f. sargentianus (Orcutt) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus schottii f. spiralis (A.M. Carter) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus schottii v. australis (K. Brandegee) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus schottii v. tenuis (G.E. Lindsay) P.V. Heath, Calyx, 2 (3): 107: 1992

Pachycereus sect. Anisocereus (Backeberg) P.V. Heath, Calyx, 2 (3): 108: 1992

Pachycereus sect. Backebergia (H. Bravo Hollis) P.V. Heath, Calyx, 2 (3): 108: 1992

Pachycereus sect. Lemaireocereus (Britton & Rose) P.V. Heath, Calyx, 2 (3): 106: 1992

Pachycereus sect. Lophocereus (A. Berger) P.V. Heath, Calyx, 2 (3): 106: 1992

Pachycereus sect. Marshallocereus (Backeberg) P.V. Heath, Calyx, 2 (3): 106: 1992

Pachycereus subg. Lemaireocereus (Britton & Rose) H. Bravo Hollis, Cactaceas y suculentas mexicanas 17 (4): 119, 1972

Pachycereus subg. Pachycereus  

Pachycereus tehuantepecanus T. MacDougall & H. Bravo Hollis, Cactaceas y suculentas mexicanas 1 (4): 64-67, f. 43-48, 1956

Pachycereus tepamo S. Gama-López & S. Arias, Novon 8 (4): 359, f. 1-2, 1998

Pachycereus tetetzo (F.A.C. Weber ex K. Schumann) Ochot., Cact. Mex. 72, 1922

Pachycereus titan (Engelmann) Britton & Rose, Contributions from the U. S. National Herbarium 12 (10): 422, 1909

Pachycereus weberi (J.M. Coulter) Backeberg, Die Cactaceae 4: 2154, 1960

Pachycereus weberi v. gigas (Backeberg) P.V. Heath, Calyx, 2 (3): 107: 1992