Erythea 2: 124. 1894.
Plants 10–100 cm. Stems spreading to ascending or erect, green when young, highly branched, glabrous, gland-dotted (sometimes in pits), resinous. Leaves ascending-spreading; blades cuneate to spatulate, 2–25 × 2–16 mm, midnerves evident or faint, (margins usually flat) apices rounded, obtuse, or retuse, sometimes mucronate, faces glabrous, gland-dotted (in pits), thickly resinous; axillary leaf fascicles rarely present. Heads usually borne singly, sometimes in rounded, cymiform arrays (to 5 × 8 cm). Peduncles 2–10 mm (bracts 0–10+, scalelike). Involucres turbinate to narrowly campanulate, 6–12.5 × 4–14 mm. Phyllaries 20–60 in 3–7 series, tan, ovate to lanceolate, 2–6 × 0.5–2.5 mm, unequal, mostly chartaceous, sometimes each with herbaceous subapical patch, midnerves evident on proximal 1/2 or throughout, subapical resin ducts 0 or slightly darker, thickened and expanded, (margins membranous, weakly lacerate) apices acute to acuminate or obtuse, abaxial faces glabrous. Ray-florets 0 (–7); laminae 3–4.3 × 1–1.5 mm. Disc-florets 7–70; corollas ca. 5.5 mm. Cypselae tan to brown, turbinate, 2.5–3 mm, sericeous to villous; pappi off-white to brown, 6.5–8 mm. 2n = 18.
Ariz., Calif., N.Mex., Nev., nw Mexico
Varieties 3 (3 in the flora).
Variety spathulata extends into Mexico. It is reported to hybridize with Ericameria nauseosa.
|1||Disc florets 36–70 (San Diego County, California)||Ericameria cuneata var. macrocephala|
|1||Disc florets 7–33||> 2|
|2||Leaves sessile, blades cuneate, largest 3–14(–18) × 2–9(–12)||Ericameria cuneata var. cuneata|
|2||Leaves petiolate, blades spatulate, largest (9–)12–25 × 4–16||Ericameria cuneata var. spathulata|
"fine" is not a number.