Encelia frutescens (A. Gray) A. Gray var. resinosa M. E. Jones ex S. F. Blake, Proc. Amer. Acad. Arts 49: 364. 1913, not E. resinosa Brandegee 1907; E. resinifera subsp. tenuifolia C. Clark

Shrubs, 40–150 cm. Stems with slender branches from trunks, glabrate, developing fissured barks. Leaves cauline; petioles 2–6 mm; blades green, lanceolate to ovate, 10–25 mm, apices usually acute, sometimes obtuse, faces strigose, gland-dotted. Heads borne singly. Peduncles strigose to glabrate. Involucres 5–11 mm. Phyllaries lanceolate. Ray florets 8–13; corolla laminae 8–12 mm. Disc corollas yellow, 5–6 mm. Cypselae 5–8 mm; pappi 0. 2n = 36.

Flowering May–Jul, Sep. Sandstone-derived soils; 1100–1700 m; Ariz., Utah.

Plants of Encelia resinifera from the Grand Canyon of the Colorado with lengths of leaf blades and ray laminae at least three times their widths are subsp. tenuifolia.