Wildflowers of Tucson, Arizona
Yellow Wildflower
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Encelia frutescens - Button Brittlebush Encelia frutescens - Button Brittlebush
Scientific Name: Encelia frutescens
Common Name: Button Brittlebush
Flower Color: Yellow disks and rays (if present)
Plant Type: Shrub, Perennial
Height: 2 to 5 feet (61 cm to 1.5 m) tall
Date Observed: August 24, 2002
Notes: The flower heads are usually rayless (no petals) and instead only have 3/4 inch (1.9 cm) wide disks. The leaves are rough, green, alternate, stiffly hairy, and rounded to narrowly oval in shape. The stems are often whitish. This native, desert shrub blooms in the spring and summer after rains.
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