Ericameria discoidea

(Nuttall) G. L. Nesom

Phytologia 68: 153. 1990.

Common names: Whitestem goldenbush sharp-scale goldenweed
Basionym: Macronema discoidea Nuttall Trans. Amer. Philos. Soc., n. s. 7: 322. 1840
Synonyms: Haplopappus macronema A. Gray
Treatment appears in FNA Volume 20. Treatment on page 58. Mentioned on page 52, 59, 62, 68.

Plants 10–40 cm. Stems erect to spreading, abundantly branched, twigs green when young, concealed by whitish, pannose tomentum, sporadically stipitate-glandular. Leaves ascending to spreading; blades linear or oblong to oblanceolate (flat), 10–35 × 2–7 mm, midnerves evident (1–2 fainter, collateral nerves often present), (margins often undulate) apices acute to obtuse, usually apiculate, faces usually stipitate-glandular, resinous; axillary fascicles absent. Heads borne singly or in cymiform to racemiform arrays. Peduncles 3–15 mm (bracts 0–3, reduced, leaflike, whitish tomentose and usually stipitate-glandular). Involucres obconic, 9–13 × 6–10 mm. Phyllaries 12–17 in 2–3 series, green to tan, lanceolate to oblong, 6–10 × 1–2 mm, subequal, outer herbaceous or distally so, inner mostly chartaceous, midnerves evident, (margins of outer often distally stipitate-glandular, of inner narrowly membranous, sometimes minutely ciliolate) apices acute to attenuate, abaxial faces stipitate-glandular. Ray florets 0. Disc florets 10–26; corollas 9–11 mm. Cypselae brownish, narrowly oblong to narrowly ovoid, 5–6 mm, villous; pappi tan, 8.5–11 mm. 2n = 18.

Phenology: Flowering late summer–fall.
Habitat: Rocky, open or sparsely wooded slopes, often in coarse talus
Elevation: 2500–3800 m



Calif., Colo., Idaho, Mont., Nev., Oreg., Utah.


Ericameria discoidea is common in the Rocky Mountains.

Selected References


Lower Taxa

... more about "Ericameria discoidea"
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(Nuttall) G. L. Nesom +
Macronema discoidea +
Whitestem goldenbush +  and sharp-scale goldenweed +
Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +  and Utah. +
2500–3800 m +
Rocky, open or sparsely wooded slopes, often in coarse talus +
Flowering late summer–fall. +
Illustrated +  and Endemic +
Haplopappus macronema +
Ericameria discoidea +
Ericameria +
species +