Flora of North America species comparison

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Ericameria resinosa

Ericameria winwardii

Columbia goldenweed, Columbian goldenbush, Columbian heath goldenweed

Winward's goldenbush
Habit Plants 30–50 cm. Plants 5–20 cm.
Stems

erect to spreading, green when young, fastigiately branched, glabrous or sparsely hairy, resinous.

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

mostly ascending to spreading, often recurved distally;

blades filiform to narrowly oblanceolate (adaxially sulcate), 10–25 × 0.5–1.5 mm, midnerves obscure, apices apiculate, faces glabrous, resinous (axillary fascicles usually present).

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.
Peduncles

1–10 mm (bracts 0–15+).

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

obconic, 5.5–8 × 3–5 mm.

obconic, 9–12 × 3–4 mm.
Ray florets

3–7;

laminae (white) 5.5–7 × 1.5–2 mm.

0.
Disc florets

10–15;

corollas (white) 6–8 mm.

4–9;

corollas ca. 9 mm.
Phyllaries

22–34 in 4–5 series, green to tan, lanceolate to oblong, 1–6 × 0.5–1.5 mm, strongly unequal (sometimes outer subequal), mostly chartaceous, outer herbaceous or apically so (mid bodies often apically obtuse to notched, with subulate appendages), midnerves evident, (margins narrowly membranous, entire or serrulate, often ciliolate) apices acute to attenuate (outer often squarrose), abaxial faces glabrous, resinous.

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.
Heads

in loose, cymiform arrays (1–4 cm wide).

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

tan to brown, narrowly turbinate, 4.5–5 mm, moderately to densely sericeous;

pappi off-white to brown, 5.8–7.2 mm.

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

pappi tan, 8–9 mm.
2n

= 18.

Ericameria resinosa

Ericameria winwardii
Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Rocky plains, steep hillsides, and cliff faces, often on basalt Silty-clay and clay-shale slopes
Elevation 100–1000 m (300–3300 ft) 2000–2200 m (6600–7200 ft)
Distribution
from FNA
ID; OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
ID; WY
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 76. 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. 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. 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. zionis
Synonyms Haplopappus resinosus E. discoidea var. winwardii
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 319. (1840) (Dorn & Delmatier) R. P. Roberts & Urbatsch: Sida 21: 1562. (2005)
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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