Wildflowers of Tucson, Arizona
Yellow Wildflower
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Tetramerium nervosum - Hairy Fournwort Tetramerium nervosum - Hairy Fournwort
Scientific Name: Tetramerium nervosum
Common Name: Hairy Fournwort
Flower Color: Pale yellowish cream with violet
Plant Type: Subshrub, Herb, Perennial
Height: To 1 foot (30 cm) tall
Date Observed: September 9, 2006
Notes: The tubular flowers have a violet patch with a yellow base on the upper lobe, 2 side lobes, and a folded, projecting lower lobe. The flowers emerge from 4-sided leafy bracts on the hairy flower spikes. The leaves are lanceolate and opposite. This native plant blooms in the late summer in upland areas.
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