Yellow Wildflower
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Wildflowers of Tucson, Arizona |
Yellow Wildflower |
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| Scientific
Name: Sonchus
asper Common Name: Spiny Sowthistle Flower Color: Yellow Plant Type: Herb, Annual Height: To 5 feet (1.5 m) tall Date Observed: April 23, 2004 Notes: The 1 inch (2.54 cm) wide flowers are followed by vase-shaped structures. The ribbed seeds have a fluff of white hairs to aid in wind dispersal. Beware, the leaves on this introduced weed have sharply spiny margins. The upper leaves clasp the stems, while the lower ones are lobed and toothed. |
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