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Holly-Leaf Burr-Ragweed (Ambrosia ilicifolia)

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Home « California « Placer « Ambrosia « Ambrosia ilicifolia
Family: ASTERACEAE
Genus: Ambrosia
Species: Holly-Leaf Burr-Ragweed (Ambrosia ilicifolia)

Holly-Leaf Burr-Ragweed Species Description

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This species is native to North America north of Mexico.

Allergenicity: Holly-Leaf Burr-Ragweed (Ambrosia ilicifolia) is a severe allergen.

Pollination: Occurs in following seasons depending on latitude and elevation: Winter to Spring.

Angiosperm - Flowering Dicot: Plants in this group have two embryonic leaves (dicotyledons). Examples of dicotyledons are beans, buttercups, oaks, sunflowers, etc.

Shrub: A woody plant smaller than a tree, and usually with several stems from the same root.

Perennial: Living for many years.

Woody Stem: Non-herbaceous. Lignified.

Holly-Leaf Burr-Ragweed Species Usage

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Holly-Leaf Burr-Ragweed Species Location

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The shaded areas on the map indicates where the species has been observed in the United States. Click the map to see a full scale version of these allergy areas.
  - Native, observed in a county
  - Introduced, observed in a county
  - Rarely observed
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