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narrowleaf hawksbeard

Scientific Name: Crepis tectorum

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names:

       

Narrowleaf Hawksbeard (Crepis tectorum)

Narrowleaf hawksbeard, scientifically known as Crepis tectorum, is an annual or winter annual plant also referred to as narrow-leaved hawk's-beard or wall hawk's-beard.

Considerations for Pets and Children

  • This plant can grow to a height of 30–100 centimetres (12–39 inches).

Taxonomy and Nomenclature

  • Scientific Name: Crepis tectorum L.
  • Family: Asteraceae (Daisy Family, also referred to as Compositae) - Subfamily mentioned, but not specified.
  • Synonyms: None explicitly stated, but "narrow-leaf hawk's-beard" and "narrowleaved hawk's beard" are listed as synonyms.
  • Common Names: Narrowleaf hawksbeard, narrow-leaved hawk's-beard, wall hawk's-beard, annual hawksbeard, yellow hawks-beard.
  • Taxonomic Tree:
    • Domain: Eukaryota
    • Kingdom: Plantae
    • Phylum: Spermatophyta

Distribution and Habitat

  • Native to: Range not specified, but noted as nonindigenous in Alaska.
  • Commonly found in northern Alberta and northwestern Saskatchewan.
  • Observed in open fields, sometimes near conifers and ponds.
  • Also seen along the Rocky Mountains through the United States into Canada.

Ecological Role

  • Classified as an invasive species in Alaska.
  • Rapidly spreading in Alaska, including into areas.
  • Its presence can be problematic, requiring tillage for effective control in some areas.

Morphological Characteristics

  • Annual or winter annual forb (herbaceous flowering plant) less than 100 cm in height.
  • Leafy stems that distinguish it from the native elegant hawksbeard.
  • Basal leaves are lance-shaped.
  • Features an open cluster of yellow dandelion-type flower heads, approximately 1 inch across.

Interactions with Other Organisms

  • Observed in fields needing treatment, implying potential competition with crops.

Quirky Facts

  • The leaves of Narrowleaf Hawksbeard are edible and can be used like dandelion leaves.

Further Information

  • USDA PLANTS Database.
  • EDDMapS (Early Detection & Distribution Mapping System).
  • Discover Life.
  • Montana Field Guide.
  • Alaska Natural Heritage Program (aknhp.uaa.alaska.edu).