Wildflowers of Tucson, Arizona
Other Wildflower
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Ambrosia confertiflora - Weakleaf Burr Ragweed Ambrosia confertiflora - Weakleaf Burr Ragweed
Scientific Name: Ambrosia confertiflora (Franseria confertiflora)
Common Name: Weakleaf Burr Ragweed, Slimleaf Bursage, Slender Ragweed
Flower Color: Yellowish to greenish
Plant Type: Herb, Perennial
Height: To 3 feet (91 cm) tall
Date Observed: April 30, 2004
Notes: This allergenic weed has pinnate leaves and separate male and female flowers. The stamenate flower heads are 0.4 inches (9 mm) wide in terminal inflorescences. The pistillate heads are below.
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