Proc. Amer. Acad. Arts 8: 657. 1873.
Subshrubs or shrubs, 50–150 cm. Stems with slender branches from trunks, glabrous, developing fissured barks. Leaves cauline; petioles 2–7 mm; blades green, elliptic or narrowly ovate, 10–25 mm, apices obtuse, faces strigose. Heads borne singly. Peduncles strigose. Involucres 6–12 mm. Phyllaries lanceolate. Ray-florets 0. Disc corollas yellow, 5–6 mm. Cypselae 6–9 mm; pappi 0 or of 2 bristlelike awns. 2n = 36.
Phenology: Flowering Feb–May, Aug–Sep.
Habitat: Desert washes, flats, slopes, roadsides
Elevation: 0–800 m
Ariz., Calif., Nev., Mexico (Baja California), Mexico (Sonora)
Plants of Encelia frutescens in the flora area are var. frutescens; var. glandulosa C. Clark, with glandular, strigose leaves, is found in northeastern Baja California and is not expected here.
"broader" is not a number.