Green Rabbitbrush

Plants 30–150 cm. Stems erect to ascending, green when young, fastigiately branched, gland-dotted (in pits), resinous. Leaves mostly ascending to spreading; blades filiform (adaxially sulcate), 10–35 × 0.5–1.5 mm, midnerves obscure, apices acute to obtuse or rounded, faces glabrous, gland-dotted (in circular, deep pits), resinous. Heads in cymiform to racemiform arrays (1–3 cm wide). Peduncles 0.5–2 mm (bracts 0–3, mostly like outer phyllaries). Involucres obconic, 5–9 × 2–5 mm. Phyllaries 16–20 in 3–5 series (in vertical ranks), tan, lanceolate to oblong, 1–7 × 0.5–1.5 mm, strongly unequal, mostly chartaceous, midnerves mostly obscure, apices acute to rounded (outer each tipped with subspheric resin-gland), abaxial faces resinous. Ray florets 0. Disc florets 5–7; corollas 5.8–8 mm. Cypselae tan to brown, narrowly ellipsoid, 3–4 mm, sericeous; pappi off-white to brown, 6–7.5 mm. 2n = 18.

Linosyris teretifolia Durand & Hilgard, Pl. Heermann., 41. 1854; Chrysothamnus teretifolius (Durand & Hilgard) H. M. Hall

Ericameria teretifolia, known by the common name green rabbitbrush, is a North American species of flowering plants in the family Asteraceae. It is native to southern and eastern California, southern Nevada, and northwestern Arizona in the southwestern United States.

Ericameria teretifolia is a shrub up to 150 cm (5 feet) tall. Leaves are thread-shaped and terete (round in cross-section, very gradually tapering; the epithet teretifolia means "with terete leaves"). One plant can produce many small yellow flower heads each with 5-7 disc florets but no ray florets. The plant grows in desert regions, in flat plains, rocky slopes, and canyon walls.