Flora of North America species comparison

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Ericameria arizonica

Ericameria suffruticosa

Arizona goldenbush

bighead goldenbush, goldenweed, heath goldenrod, shrubby goldenweed, single-head goldenweed, singlehead goldenbush
Habit Plants 20–50 cm. Plants 10–40 cm.
Stems

erect to spreading, reddish tan, becoming darker, branched, short-stipitate-glandular, usually resinous.

spreading to erect (bushes mostly broader than high), highly branched, green when young, becoming reddish brown, long-stipitate-glandular.
Leaves

ascending to spreading;

blades elliptic to narrowly oblanceolate (flat or somewhat concave adaxially), 10–35 × 2–5 mm, midnerves evident (often with 1–2 fainter, collateral veins), apices acute, apiculate, faces short-stipitate-glandular, usually gland-dotted;

axillary fascicles absent.

ascending;

blades oblanceolate, 5–40 × 2–7 mm, midnerves evident, (margins crispate) apices acute, faces long-stipitate-glandular;

fascicles absent or of 1–3 leaves.
Peduncles

1–10 mm (bracts 1–5, resembling phyllaries, stipitate-glandular).

2–20(–40) mm (bracts 1–10+, leaflike).
Involucres

obconic, 5.5–7.5 × 2.5–4 mm.

campanulate, 9–15 × 10–15 mm.
Ray florets

1–8;

laminae elliptic, 3–4 × 0.8–1.3 mm.

(0–)1–8;

laminae elliptic, 8–14 × 1.5–4 mm.
Disc florets

5–15;

corollas 5–7 mm.

15–40;

corollas 8.5–10.5 mm.
Phyllaries

30–40 in 4–5 series, tan, lanceolate to elliptic, 2–7 × 0.5–1.2 mm, strongly unequal, mostly chartaceous (bodies abruptly constricted at bases of appendages), midnerves faint, (margins membranous, sparsely ciliate apically), apices (usually recurved) usually acute to cuspidate, sometimes long-acuminate, abaxial faces glabrate, often gland-dotted.

17–31 in 2–3 series, green to tan, lanceolate to obovate, 8–18 × 1–4 mm, subequal, outer herbaceous or herbaceous-tipped, inner chartaceous to herbaceous-tipped, midnerves (+ 2 smaller, collateral nerves) often evident, (margins herbaceous or narrowly membranous, mostly stipitate glandular to fimbriate) apices acute to acuminate, abaxial faces stipitate-glandular.
Heads

in cymiform arrays (to 4 cm wide).

borne singly or (2–3) in (leafy) racemiform arrays (1–4 cm wide).
Cypselae

usually tan, sometimes reddish, narrowly obconic, 4–5.5 mm, glabrous or densely sericeous;

pappi whitish tan, 4–5.5 mm.

narrowly turbinate to ellipsoid, 5.5–8 mm, villous;

pappi tan, 7.5–9 mm.
2n

= 18.

Ericameria arizonica

Ericameria suffruticosa
Phenology Flowering fall. Flowering mid summer–fall.
Habitat Rock faces, cracks, and crevices and stony soils, usually on limestone Rocky slopes and ridges in conifer forests and alpine zones
Elevation ca. 2100 m (ca. 6900 ft) 2100–3500 m (6900–11500 ft)
Distribution
from FNA
AZ
[BONAP county map]
from FNA
CA; ID; MT; NV; OR; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Ericameria arizonica grows in the Grand Canyon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 55. FNA vol. 20, p. 76.
Parent taxa Asteraceae > tribe Astereae > Ericameria Asteraceae > tribe Astereae > Ericameria
Sibling taxa
E. albida, E. arborescens, 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, 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. teretifolia, E. watsonii, E. winwardii, E. zionis
Synonyms Macronema suffruticosa, Haplopappus suffruticosus
Name authority R. P. Roberts: Sida 21: 1558, fig. 1. (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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