Leaf blades 20–80+ × 3–15+ mm. Phyllaries ± lanceolate, 1–10 mm. Ray laminae 5–7+ mm. Disc corollas 4–5+ mm. Cypselae 3–4 mm; pappi 3–4 mm. 2n = 10.
Phenology: Flowering Jun–Nov.
Habitat: Serpentine outcrops and clay slopes
Elevation: 300–1000 m
Benitoa occidentalis is known only from the inner South Coast Ranges, southern San Benito County, and adjacent Fresno and Monterey counties.