Flora of North America species comparison

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Ericameria teretifolia

Ericameria cooperi

green or round-leaf rabbitbrush, green rabbitbrush, round-leaf rabbitbrush

Cooper's goldenbush
Habit Plants 30–150 cm.
Stems

erect to ascending, green when young, fastigiately branched, gland-dotted (in pits), resinous.

Leaves

mostly ascending to spreading;

blades filiform (adaxially sulcate), 10–35 × 0.5–1.5 mm, midnerves obscure, apices acute to obtuse or rounded, faces glabrous, gland-dotted (in circular, deep pits), resinous.

Peduncles

0.5–2 mm (bracts 0–3, mostly like outer phyllaries).

Involucres

obconic, 5–9 × 2–5 mm.

Ray florets

0.

Disc florets

5–7;

corollas 5.8–8 mm.

Phyllaries

16–20 in 3–5 series (in vertical ranks), tan, lanceolate to oblong, 1–7 × 0.5–1.5 mm, strongly unequal, mostly chartaceous, midnerves mostly obscure, apices acute to rounded (outer each tipped with subspheric resin-gland), abaxial faces resinous.

Heads

in cymiform to racemiform arrays (1–3 cm wide).

Cypselae

tan to brown, narrowly ellipsoid, 3–4 mm, sericeous;

pappi off-white to brown, 6–7.5 mm.

2n

= 18.

Ericameria teretifolia

Ericameria cooperi
Phenology Flowering fall.
Habitat Canyon walls, rocky flats, and slopes
Elevation 600–2400 m (2000–7900 ft)
Distribution
from FNA
AZ; CA; NV
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV; nw Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (1 in the flora).

Ericameria cooperi var. bajacalifornica (Urbatsch & Wussow) Urbatsch is known only from Mexico (Baja California).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 76. FNA vol. 20, p. 56.
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. watsonii, E. winwardii, E. zionis
E. albida, E. arborescens, E. arizonica, E. bloomeri, E. brachylepis, E. cervina, E. compacta, 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
Subordinate taxa
E. cooperi var. cooperi
Synonyms Linosyris teretifolia, Chrysothamnus teretifolius Bigelowia cooperi, Haplopappus cooperi
Name authority (Durand & Hilgard) Jepson: Man. Fl. Pl. Calif., 1024. (1925) (A. Gray) H. M. Hall: Univ. Calif. Publ. Bot. 3: 56. (1907)
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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