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Ancistrocactus  (K. Schum.) Britton & Rose
Taxonomic Serial No.: 19871

(Download Help) Ancistrocactus TSN 19871

 Taxonomy and Nomenclature
  Kingdom: Plantae  
  Taxonomic Rank: Genus  
  Common Name(s):    
  Accepted Name(s): Sclerocactus Britton & Rose
  Taxonomic Status:    
  Current Standing: not accepted - synonym   
  Data Quality Indicators:    
  Record Credibility Rating: verified - standards met  
  Global Species Completeness: unknown   
  Latest Record Review: 2013   

  Expert: Charles A. Butterworth, Ph.D.  
  Notes: ITIS Cactaceae Steward   
  Reference for: Ancistrocactus    
  Expert: J. Mark Porter, Ph.D.  
  Notes: Researcher, Rancho Santa Ana Botanic Garden and Associate Professor of Botany, Claremont Graduate University   
  Reference for: Ancistrocactus    
  Other Source(s):    
  Source: NODC Taxonomic Code, database (version 8.0)  
  Acquired: 1996   
  Reference for: Ancistrocactus   
  Author(s)/Editor(s): Benson, Lyman  
  Publication Date: 1982   
  Article/Chapter Title:    
  Journal/Book Name, Vol. No.: The Cacti of the United States and Canada   
  Page(s): ix + 1044   
  Publisher: Stanford University Press   
  Publication Place: Stanford, California, USA   
  ISBN/ISSN: 0-8047-0863-0   
  Reference for: Ancistrocactus   
  Author(s)/Editor(s): Hunt, David  
  Publication Date: 2006   
  Article/Chapter Title:    
  Journal/Book Name, Vol. No.: The New Cactus Lexicon: Text   
  Page(s): x + 373   
  Publisher: dh books   
  Publication Place: Milborne Port, England   
  ISBN/ISSN: 0-9538134-5-2   
  Reference for: Ancistrocactus   

 Geographic Information
  Geographic Division:    



  Comment: Current evidence supports the following taxa as monophyletic group: Sclerocactus in the narrow (traditional) sense, species formerly included in Echinomastus (some of them treated as Neolloydia by Benson 1982) and species formerly included in Ancistrocactus. It is true Sclerocactus subgenus Ancistrocactus is the sister lineage to Sclerocactus subgenus Sclerocactus (Echinomastus + Sclerocactus). If there were profound morphological differences (and synapomorphies) for these two lineages, one might argue that treating them at the rank of genus is appropriate. However, there are no such traits. In fact, the trait used by Benson (1982) to distinguish Ancistrocactus from Sclerocactus - the felted adaxial areolar groove - is present in both genera. Therefore, there does not seem to be justification from either molecular data or morphology to segregate the two genera (Sclerocactus and Ancistrocactus)  



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