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Hall's tarweed

Scientific Name: Deinandra halliana

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names:

       

Hall's Tarweed (Deinandra halliana)

Hall's Tarweed, scientifically known as Deinandra halliana, is a plant belonging to the tarweed tribe within the sunflower family (Asteraceae). It is also referred to as Hall's tarplant.

Taxonomy and Nomenclature

  • Scientific Name: Deinandra halliana (D.D. Keck) B.G. Baldw.
  • Common Name: Hall's Tarweed
  • Kingdom: Plantae
  • Taxonomic Rank: Species
  • Family: Asteraceae (Sunflower Family)
  • Synonyms:
    • Hemizonia halliana Keck
    • Hemizonia increscens (H.M.Hall ex D.D.Keck) Tanowitz
  • Related Taxa:
    • Deinandra increscens subsp. villosa (Gaviota tarweed)
    • Deinandra corymbosa (Coastal Tarweed)
    • Deinandra fasciculata (Clustered Tarweed)
    • Deinandra increscens (Hall ex Keck) B.G. Baldwin - Grassland Moonshine.

Distribution and Habitat

  • Hall's Tarweed is a California native.
  • It has been found in locations like Livermore, Alameda.
  • Other tarweeds are also found in the Western United States.

Morphological Characteristics

  • It is classified as a forb/herb.
  • It is an annual plant.
  • Described as taprooted, rosetted, ascending to erect with shoots up to 80cm tall, with cauline leaves, villous with long hair.

Ecological Role

  • Tarweed presence may indicate wetland habitat.

Additional Information

  • The PLANTS Database (USDA) provides reference and taxonomic information (Symbol: DEHA7).
  • ITIS (Integrated Taxonomic Information System) also contains information on Hall's Tarweed.