Ericameria watsonii |
Ericameria cooperi |
|
---|---|---|
Watson's goldenbush |
Cooper's goldenbush |
|
Habit | Plants 5–40 cm. | |
Stems | erect to spreading (close to the ground), green when young, becoming pale reddish brown, highly branched, coarsely long-stipitate-glandular. |
|
Leaves | (crowded) ascending; blades elliptic to oblanceolate, 10–25 × 3–8 mm, midnerves evident (1–2 fainter, collateral nerves often present), (margins undulate) apices acute, apiculate, faces long-stipitate-glandular; fascicles usually absent, (sometimes of 1–3 reduced leaves). |
|
Peduncles | 1–12 mm (bracts 3–20, crowded, leafy, grading into phyllaries). |
|
Involucres | broadly obconic, 6–8 × 4–7 mm. |
|
Ray florets | 4–8; laminae elliptic, 6–9 × 1–2 mm. |
|
Disc florets | 12–22; corollas 5.5–6.5 mm. |
|
Phyllaries | 25–30 in 3–4 series, green to tan, ovate to oblong, 4–8 × 0.7–1.5 mm, unequal, outer herbaceous or with herbaceous appendages, inner mostly chartaceous, midnerves usually evident, (margins entire, outer often herbaceous, inner scarious) apices acute to acuminate or attenuate, abaxial faces mostly stipitate-glandular. |
|
Heads | usually in cymiform arrays. |
|
Cypselae | tan to brown, narrowly turbinate, 3–4.5 mm (usually 5-ribbed), moderately sericeous; pappi tan, 4–5.5 mm. |
|
2n | = 18. |
|
Ericameria watsonii |
Ericameria cooperi |
|
Phenology | Flowering late summer–fall. | |
Habitat | Rock outcrops, desert scrub, pinyon-juniper, ponderosa pine communities | |
Elevation | 1300–3400 m (4300–11200 ft) | |
Distribution |
AZ; NV; UT |
CA; NV; nw Mexico
|
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. 77. | FNA vol. 20, p. 56. |
Parent taxa | ||
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Haplopappus watsonii | Bigelowia cooperi, Haplopappus cooperi |
Name authority | (A. Gray) G. L. Nesom: Phytologia 68: 152. (1990) | (A. Gray) H. M. Hall: Univ. Calif. Publ. Bot. 3: 56. (1907) |
Web links |