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slimleaf burr ragweed

Scientific Name: Ambrosia tenuifolia

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names:

       

Ambrosia tenuifolia: Slimleaf Burr Ragweed

Ambrosia tenuifolia, commonly known as Slimleaf Burr Ragweed, is a forb/herb belonging to the Asteraceae family. This annual plant is recognized by various common names, including Slimleaf Burr-ragweed, Lacy Ragweed, and Field Ragweed.

Considerations for Pets

  • The plant produces burs, which enclose 1 or 2 achenes. These burs may pose a hazard if they become attached to pet fur.

Considerations for Children

  • The plant produces burs, which enclose 1 or 2 achenes. These burs may pose a hazard if they become attached to clothing.

Taxonomy and Nomenclature

  • Scientific Name: Ambrosia tenuifolia Spreng.
  • Family: Asteraceae
  • Genus: Ambrosia L.
  • Common Names: Slimleaf Bur Ragweed, Slimleaf Burr-ragweed, Lacy Ragweed, Field Ragweed, Narrow-leaf Ragweed (English), Ambrosia a foglie sottili (Italian).
  • Synonyms: Franseria confertiflora (DC.) Rydb. (for Ambrosia confertiflora, a related species)

Distribution and Habitat

  • The plant is found in various locations, including Tumamoc Hill, Arizona, and metropolitan France.
  • It thrives in habitats such as bajadas and fields.

Ecological Role

  • Ambrosia tenuifolia is listed as an invasive species in NSW's Noxious Weeds.
  • It forms large colonies via creeping runner-like roots.
  • Impacts of Slimleaf bur ragweed on humans.

Morphological Characteristics

  • Ambrosia tenuifolia is a forb/herb (a non-woody plant that is not a grass).
  • Ambrosia confertiflora is described as an erect perennial herb reaching up to 2 meters in height.
  • It has grey-green leaves.

Quirky Facts

  • Ragweed oil production is on par with soybean oil production.
  • Native peoples consumed the root of at least one Ragweed species (Ambrosia tenuifolia).

Interactions with Other Organisms

  • The plant is associated with seasonal allergies (ragweed pollinosis) in both humans and animals.

Further Information

  • Dave's Garden
  • Garden Guides
  • ITIS (Integrated Taxonomic Information System)
  • Cabeza Prieta Natural History Association