Wildflowers of Tucson, Arizona
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Ambrosia deltoidea - Triangle Burr Ragweed Ambrosia deltoidea - Triangle Burr Ragweed
Scientific Name: Ambrosia deltoidea
Common Name: Triangle Burr Ragweed, Triangleleaf Bursage, Triangle Leaf Bursage
Flower Color: Yellowish to greenish
Plant Type: Subshrub, Shrub, Perennial
Height: To 2 feet (61 cm) tall
Date Observed: March 27, 2004
Notes: The 1/4 inch (6.4 mm) wide, petal-less, allergenic flowers are in terminal flower spikes and are followed by spiny, burr-like fruits. The leaves are 1.25 inches (3.2 cm) long, grayish green, triangular in shape, and have toothed margins.
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