page_title: Taxonomy of the Cactaceae
section_title: Tribe Pachycereeae
hierarchical_section_title: Taxonomy of the Cactaceae / Earlier classification / Subfamily Cactoideae / Tribe Pachycereeae
caption_attribution_description: Català: Pachycereus pringlei, cardón, espècie endèmica de Baixa Califòrnia, Baixa Califòrnia Sud i Sonora (Mèxic)
context_page_description: In 1984, the International Organization for Succulent Plant Study set up a working party, now called the International Cactaceae Systematics Group, to produce a consensus classification of the cactus family, down to the level of genus. Their classification has been used as the basis for systems published since the mid-1990s. Treatments in the 21st century have generally divided the family into around 125–130 genera and 1,400–1,500 species, which are then arranged in a number of tribes and subfamilies. However, subsequent molecular phylogenetic studies have shown that a very high proportion of the higher taxa are not monophyletic, i.e. they do not contain all of the descendants of a common ancestor. As of March 2017, the internal classification of the family Cactaceae remained uncertain and subject to change. A classification incorporating many of the insights from the molecular studies was produced by Nyffeler and Eggli in 2010.
context_section_description: Acanthocereus (Engelm. ex A.Berger) Britton & Rose – triangle cactus
  synonyms: Dendrocereus Britton & Rose, Monvillea Britton & Rose
  Bergerocactus Britton & Rose – snake cactus
  synonyms: Bergerocereus Fric & Kreuz. (orth. var.)
  Carnegiea Britton & Rose – saguaro
  Cephalocereus Pfeiff. – old man cactus
  synonyms: Haseltonia Backeb., Neodawsonia Backeb., Pilocereus Lem.
  Corryocactus Britton & Rose
  synonym: Corryocereus Fric & Kreuz. (orth. var.), Erdisia Britton & Rose, Eulychnocactus Backeb. (nom. inval.)
  Dendrocereus Britton & Rose – see Acanthocereus
  Echinocereus Engelm. – hedgehog cactus
  synonyms: Morangaya G.D.Rowley, Wilcoxia Britton & Rose
  Escontria Rose
  Isolatocereus Backeb. – see Stenocereus
  Leptocereus (A.Berger) Britton & Rose
  synonyms: Neoabbottia Britton & Rose
  ×Myrtgerocactus Moran
  [= Myrtillocactus × Bergerocactus]
  Myrtillocactus Console
  synonyms: Myrtillocereus Fric & Kreuz. (orth. var.)
  Neobuxbaumia Backeb.
  synonyms: Pseudomitrocereus Bravo & Buxb., Rooksbya Backeb.
  ×Pacherocactus G.D.Rowley
  [= Pachycereus × Bergerocactus]
  Pachycereus (A.Berger) Britton & Rose
  synonyms: Backebergia Bravo, Lemaireocereus Britton & Rose, Lophocereus (A.Berger) Britton & Rose, Marginatocereus (Backeb.) Backeb., Mitrocereus (Backeb.) Backeb., Pterocereus T.MacDoug. & Miranda
  Peniocereus (A.Berger) Britton & Rose
  synonyms: Cullmannia Distefano, Neoevansia W.T.Marshall, Nyctocereus (A.Berger) Britton & Rose
  Polaskia Backeb.
  synonyms: Chichipia Backeb. (nom. inval.), Heliabravoa Backeb.
  Pseudoacanthocereus F.Ritter
  Stenocereus (A.Berger) Riccob.
  synonyms: Hertrichocereus Backeb., Isolatocereus Backeb., Isolatocereus (Backeb.) Backeb., Machaerocereus Britton & Rose, Marshallocereus Backeb., Neolemaireocereus Backeb., Rathbunia Britton & Rose, Ritterocereus Backeb.
caption: Pachycereus pringlei
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