Wildflowers of Tucson, Arizona
Yellow Wildflower
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Solanum rostratum - Buffalobur Nightshade (Buffalo Burr) Solanum rostratum - Buffalobur Nightshade (Buffalo Burr)
Scientific Name: Solanum rostratum
Common Name: Buffalobur Nightshade, Buffalo Burr
Flower Color: Yellow
Plant Type: Herb, Annual
Height: To 30 inches (76 cm) tall
Date Observed: July 8, 2006
Notes: Poisonous and weedy. The 1 inch (2.54 cm) wide flowers have 5, pointed lobes and 5, projecting, beak-like anthers (4 straight and a larger curved one). The dark green leaves are deeply pinnately lobed. The entire plant is covered in sharp spines that can cause intense, lingering pain if touched.
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