Wildflowers of Tucson, Arizona
Yellow Wildflower
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Hymenothrix wislizeni - TransPecos Thimblehead Hymenothrix wislizeni - TransPecos Thimblehead
Scientific Name: Hymenothrix wislizeni
Common Name: TransPecos Thimblehead, Yellow Thimblehead
Flower Color: Yellow disks and rays
Plant Type: Herb, Annual, Biennial
Height: 2 to 5 feet (61 cm to 1.5 m) tall
Date Observed: August 20, 2002
Notes: The small flower heads have narrow, toothed rays and are in branched clusters at the tops of the tall, slender stems. The leaves are green, alternate, and ternately divided and dissected into 3 narrow lobes. This native plant blooms in the summer and fall.
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