Tarweeds (Hemizonia spp.)
Click on images to enlarge
Tarweeds, which include several species in the sunflower family, occur throughout California and are found in rangelands, pastures, and roadsides. All have sticky, heavily scented leaves. Shown here is three-rayed tarweed.
Mature tarweeds range from about 1 to 1-1/2 feet (30–45 cm) high. Lower leaves are deeply lobed and lancelike. Upper leaves are flattened against the stem, glandular and hairy.
The petals have three-toothed edges and may be yellow or white depending on the species and variable in number from three to many per flower.