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Conyza canadensis  (L.) Cronquist
Taxonomic Serial No.: 37113

(Download Help) Conyza canadensis TSN 37113

 Taxonomy and Nomenclature
  Kingdom: Plantae  
  Taxonomic Rank: Species  
  Synonym(s): Conyza parva Cronquist
    Erigeron canadensis L.
    Erigeron pusillus Nutt.
    Leptilon canadense (L.) Britton
    Leptilon pusillum (Nutt.) Britton
    Conyza canadensis var. canadensis (L.) Cronquist
    Conyza canadensis var. glabrata (A. Gray) Cronquist
    Conyza canadensis var. pusilla (Nutt.) Cronquist
    Erigeron canadensis var. glabratus A. Gray
    Erigeron canadensis var. pusillus (Nutt.) B. Boivin, non H.E. Ahles
  Common Name(s): Canadian horseweed [English]
    horseweed [English]
    horseweed fleabane [English]
    mares tail [English]
    Canada horseweed [English]
    marestail [English]
  Taxonomic Status:    
  Current Standing: accepted  
  Data Quality Indicators:    
  Record Credibility Rating: verified - standards met  

 Taxonomic Hierarchy
 KingdomPlantae  – plantes, Planta, Vegetal, plants  
       InfrakingdomStreptophyta  – land plants  
             DivisionTracheophyta  – vascular plants, tracheophytes  
                SubdivisionSpermatophytina  – spermatophytes, seed plants, phanérogames  
                            FamilyAsteraceae  – sunflowers, tournesols  
                               GenusConyza Less. – horseweed  
                                  SpeciesConyza canadensis (L.) Cronquist – Canadian horseweed, horseweed, horseweed fleabane, mares tail, Canada horseweed, marestail  

  Expert: John L. Strother  
  Notes: University Herbarium, University of California, 1001 Valley Life Sciences Bldg. #2465, Berkeley, CA 94720-2465, USA   
  Reference for: Conyza canadensis    
  Other Source(s):    
  Source: Asteraceae of North America Update, database (version 2010.5.13)  
  Acquired: 2010   
  Notes: Update coordinated by the International Compositae Alliance (TICA) ( through the Smithsonian Institution in collaboration with the USDA National Plant Data Center   
  Reference for: Conyza canadensis   
  Source: NODC Taxonomic Code, database (version 8.0)  
  Acquired: 1996   
  Reference for: Conyza canadensis   
  Source: The PLANTS Database, database (version 4.0.4)  
  Acquired: 1996   
  Notes: National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA.   
  Reference for: Conyza canadensis   
  Source: The PLANTS Database, database (version 5.1.1)  
  Acquired: 2000   
  Notes: National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA.   
  Reference for: Conyza canadensis   
  Publication Date:    
  Article/Chapter Title:    
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  Reference for:    

 Geographic Information
  Geographic Division: Caribbean  
    North America  
  Jurisdiction/Origin: Continental US, Native  
    Caribbean Territories, Native  
    Hawaii, Introduced  
    Alaska, Introduced  
    Canada, Native  






 Subordinate Taxa  Rank  Verified Standards Met  Verified Min Standards Met  Unverified Percent Standards Met

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Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. However, it is not a legal authority for statutory or regulatory purposes. While every effort has been made to provide the most reliable and up-to-date information available, ultimate legal requirements with respect to species are contained in provisions of treaties to which the United States is a party, wildlife statutes, regulations, and any applicable notices that have been published in the Federal Register. For further information on U.S. legal requirements with respect to protected taxa, please contact the U.S. Fish and Wildlife Service.

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