Flora of North America species comparison

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Ericameria winwardii

Ericameria discoidea

Winward's goldenbush

discoid goldenweed, rayless goldenbush, sharp-scale goldenweed, white-stem goldenbush
Habit Plants 5–20 cm. Plants 10–40 cm.
Stems

stems prostrate or ascending to erect, green when young (± concealed by tomentum), becoming tan to brown, moderately branched, densely floccose-tomentose, eglandular.

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

ascending;

blades elliptic or oblanceolate (flat), 6–15 × 2.5–5 mm, midnerves prominent, apices acute (often curved downward), faces densely silvery white floccose-tomentose, eglandular;

fascicles absent.

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

1–5 mm (tomentose, bracts 0–3, phyllary-like).

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

obconic, 9–12 × 3–4 mm.

obconic, 9–13 × 6–10 mm.
Ray florets

0.

0.
Disc florets

4–9;

corollas ca. 9 mm.

10–26;

corollas 9–11 mm.
Phyllaries

11–15 in 2–3 series, lanceolate or elliptic to oblanceolate, 1.5–5 × 0.8–1.3 mm, subequal, outer herbaceous or herbaceous-tipped, inner mostly chartaceous or herbaceous-tipped, midnerves conspicuous, raised, (margins: outer herbaceous, entire, floccose-tomentose, inner narrowly scarious, minutely lacerate) apices acute to acuminate, outer abaxial faces floccose-tomentose, inner glabrate.

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

usually borne singly, sometimes (2–3) in racemiform arrays (5–20 mm wide).

borne singly or in cymiform to racemiform arrays.
Cypselae

tan to brown, narrowly oblanceoloid, 5–7 mm (5-ribbed), densely sericeous;

pappi tan, 8–9 mm.

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

pappi tan, 8.5–11 mm.
2n

= 18.

Ericameria winwardii

Ericameria discoidea
Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Silty-clay and clay-shale slopes Rocky, open or sparsely wooded slopes, often in coarse talus
Elevation 2000–2200 m (6600–7200 ft) 2500–3800 m (8200–12500 ft)
Distribution
from FNA
ID; WY
[BONAP county map]
from FNA
CA; CO; ID; MT; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

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

Ericameria discoidea is common in the Rocky Mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 77. FNA vol. 20, p. 58.
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. 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. zionis
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 E. discoidea var. winwardii Macronema discoidea, Haplopappus macronema
Name authority (Dorn & Delmatier) R. P. Roberts & Urbatsch: Sida 21: 1562. (2005) (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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