Arizona Wild Flowers
Wildflower Pictures And Photos

Canyon Ragweed, Ambrosia ambrosioides

Canyon Ragweed, Ambrosia ambrosioides	Canyon Ragweed, Ambrosia ambrosioides
Canyon Ragweed Has Longer Wider Leaves Than Triangle-Leaf Bursage, Burrobush, or Rabbitbush	Canyon Ragweed, Not Triangle-Leaf Bursage, Burrobush, or Rabbitbush

Canyon Ragweed Ambrosia ambrosioides, Aster Family ( Asteraceae ) Formerly called the Compositae or composite family., Canyon Ragweed. Also called Ambrosia Leaf, Burr Ragweed, Bursage, Giant Bur-sage, chicura, and Giant Bursage. . A sprawling shrub up to 6 feet tall. With red - brown bark becoming smooth and shiny. The stems are red - brown with white a pubescence, stout, brittle, with narrow leaf scars. The leaves are alternate, simple, evergreen, and elongated triangular to lance-shaped, they are coarse serrate or toothed, green above and below but covered in a pale pubescence, they are drought deciduous. The flowers are a dull yellow-green, in small clusters borne on a spike, and present in late winter to early spring. Height: Up To About 40" Tall. Flowers: Yellow - green, 5 large yellow petals about 1/2 inch long, with red - brown veins, 10 stamens with large orange anthers. Blooming Time: March - October. Fruit: Slightly curved pods, 3/4 to 1 1/3 inches long, are tipped by a stiff point about 1/8 inch long. Leaves: Dull green pinnate leaves with 2 to 3 pairs of elliptical leaflets. Found: Found in California and Arizona. Elevation: 0 - 4500 Feet. Habitat: Cities along roadsides and sandy river bottoms, and washes in the deserts. Miscellaneous: Flowering Photos Taken April 18, 2004.