Ericameria ophitidis (J. T. Howell) G. L. Nesom

Ericameria ophitidisis is known from northern California.

Plants 10–30 cm . Stems erect to spreading, green when young, becoming reddish brown, intricately branched, glabrous or sparsely hairy, sometimes resinous. Leaves ascending to spreading; blades linear (slightly concave), usually recurved, 5–15 × 0.5–1.5 mm, midnerves evident abaxially, apices acute, usually mucronate, faces glabrous or sparsely hairy, gland-dotted (not in deep pits), ± resinous; axillary fascicles of 4–7 leaves usually present. Heads borne singly or (2–7) in cymiform arrays (clusters 3–20 mm) . Peduncles 1–10 mm (glabrous or with conic hairs, resinous). Involucres subcylindric, 10–15 × 3–7 mm. Phyllaries 18–30 in 5–7 series, tan, ovate to elliptic, 2–12 × 1–2.5 mm, unequal, mostly chartaceous, occasionally herbaceous-tipped (mid bodies apically obtuse to truncate, appendages usually herbaceous, often spreading to recurved, midnerves faint, (margins membranous, fimbriate distally, otherwise sometimes ciliolate) apices acute to cuspidate, abaxial faces mostly resinous. Ray florets 0. Disc florets 5–6; corollas 9–10.5 mm. Cypselae tan to brown, turbinate to narrowly oblanceolate, 5–7 mm (ribs 5–7), moderately hairy distally; pappi off-white to brown, 9–10.5 mm.

Haplopappus bloomeri (A. Gray) J. F. Macbride var. ophitidis J. T. Howell, Leafl. W. Bot. 6: 85. 1950 (as Aplopappus); H. ophitidis (J. T. Howell) D. D. Keck

Ericameria ophitidis is a North American species of flowering shrubs in the family Asteraceae. It is native to the northern part of the state of California in the western United States. It has been found only in three counties: Trinity County, western Tehama County, and the southwestern corner of Shasta County. It is called the serpentine goldenbush because it grows on serpentine soil, toxic to many other plants.

Ericameria ophitidis is a shrub up to 30 cm (12 inches or 1 foot) tall. It has narrow, linear leaves up to 15 mm (0.6 inches) long. Flower heads are yellow, solitary or in flat-topped arrays, each head with 5 or 6 disc florets but no ray florets.