Flora of North America species comparison

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Ericameria discoidea

discoid goldenweed, rayless goldenbush, sharp-scale goldenweed, white-stem goldenbush
Habit 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.
Peduncles

3–15 mm (bracts 0–3, reduced, leaflike, whitish tomentose and usually stipitate-glandular).
Involucres

obconic, 9–13 × 6–10 mm.
Ray florets

0.
Disc florets

10–26;

corollas 9–11 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.
Heads

borne singly or in cymiform to racemiform arrays.
Cypselae

brownish, narrowly oblong to narrowly ovoid, 5–6 mm, villous;

pappi tan, 8.5–11 mm.
2n

= 18.

Ericameria discoidea
Phenology Flowering late summer–fall.
Habitat Rocky, open or sparsely wooded slopes, often in coarse talus
Elevation 2500–3800 m (8200–12500 ft)
Distribution
from FNA
CA; CO; ID; MT; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

Ericameria discoidea is common in the Rocky Mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 58.
Parent taxa Asteraceae > tribe Astereae > Ericameria
Sibling taxa
E. albida, E. arborescens, E. arizonica, E. bloomeri, E. brachylepis, E. cervina, E. compacta, E. cooperi, E. crispa, E. cuneata, E. ericoides, E. fasciculata, E. gilmanii, E. greenei, E. laricifolia, E. lignumviridis, E. linearifolia, E. linearis, E. nana, E. nauseosa, E. obovata, E. ophitidis, E. palmeri, E. paniculata, E. parishii, E. parryi, E. pinifolia, E. resinosa, E. suffruticosa, E. teretifolia, E. watsonii, E. winwardii, E. zionis
Synonyms Macronema discoidea, Haplopappus macronema
Name authority (Nuttall) G. L. Nesom: Phytologia 68: 153. (1990)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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