Flora of North America species comparison

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Ericameria discoidea

Ericameria zionis

discoid goldenweed, rayless goldenbush, sharp-scale goldenweed, white-stem goldenbush

subalpine goldenbush, subalpine or Cedar Breaks goldenbush
Habit Plants 10–40 cm. Plants 10–30 cm.
Stems

erect to spreading, abundantly branched, twigs green when young, concealed by whitish, pannose tomentum, sporadically stipitate-glandular.

decumbent to ascending, green when young, often reddish tinged, soon reddish brown to brown, branched, twigs long-stipitate-glandular (sometimes with crinkly hairs interspersed).
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.

mostly erect or ascending;

blades spatulate (flat), 25–40 × 2.5–7 mm, midnerves (plus 2 smaller, collateral nerves) evident, apices acuminate, faces long-stipitate-glandular;

fascicles absent.
Peduncles

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

3–15 mm (long-stipitate-glandular, bracts 0–3, phyllary-like).
Involucres

obconic, 9–13 × 6–10 mm.

turbinate to narrowly campanulate, 14–22 × 6–8 mm.
Ray florets

0.

0.
Disc florets

10–26;

corollas 9–11 mm.

10–21;

corollas 9.5–12 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.

17–23 in 2–4 series, tan to green, lanceolate to elliptic, 10–14 × 1.6–2.7 mm, subequal (outer often slightly longer than inner), outer herbaceous or with herbaceous cusps, inner mostly chartaceous, midnerves (often plus 2 collateral nerves) evident, (margins villous distally) apices acute to acuminate, abaxial faces stipitate-glandular, inner sometimes glabrous.
Heads

borne singly or in cymiform to racemiform arrays.

in (leafy) congested, paniculiform to cymiform arrays (1–4 cm wide).
Cypselae

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

pappi tan, 8.5–11 mm.

tan to reddish, ellipsoid, 7–8 mm, glabrous or apically hairy;

pappi off-white to brown, sometimes reddish, 9–9.5 mm.
2n

= 18.

= 18 [as Haplopappus bloomeri subsp. compactus].

Ericameria discoidea

Ericameria zionis
Phenology Flowering late summer–fall. Flowering summer–fall.
Habitat Rocky, open or sparsely wooded slopes, often in coarse talus Gravelly to sandy clay soils with manzanita, spruce, fir, and pine
Elevation 2500–3800 m (8200–12500 ft) 2400–3100 m (7900–10200 ft)
Distribution
from FNA
CA; CO; ID; MT; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
UT
[BONAP county map]
Discussion

Ericameria discoidea is common in the Rocky Mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Ericameria zionis is known from southern Utah.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 58. FNA vol. 20, p. 77.
Parent taxa Asteraceae > tribe Astereae > Ericameria 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
E. albida, E. arborescens, E. arizonica, E. bloomeri, E. brachylepis, E. cervina, E. compacta, E. cooperi, E. crispa, E. cuneata, E. discoidea, 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
Synonyms Macronema discoidea, Haplopappus macronema Haplopappus zionis
Name authority (Nuttall) G. L. Nesom: Phytologia 68: 153. (1990) (L. C. Anderson) 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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