Ericameria watsonii |
Ericameria winwardii |
|
---|---|---|
Watson's goldenbush |
Winward's goldenbush |
|
Habit | Plants 5–40 cm. | Plants 5–20 cm. |
Stems | erect to spreading (close to the ground), green when young, becoming pale reddish brown, highly branched, coarsely long-stipitate-glandular. |
stems prostrate or ascending to erect, green when young (± concealed by tomentum), becoming tan to brown, moderately branched, densely floccose-tomentose, eglandular. |
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). |
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 | 1–12 mm (bracts 3–20, crowded, leafy, grading into phyllaries). |
1–5 mm (tomentose, bracts 0–3, phyllary-like). |
Involucres | broadly obconic, 6–8 × 4–7 mm. |
obconic, 9–12 × 3–4 mm. |
Ray florets | 4–8; laminae elliptic, 6–9 × 1–2 mm. |
0. |
Disc florets | 12–22; corollas 5.5–6.5 mm. |
4–9; corollas ca. 9 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. |
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 | usually in cymiform arrays. |
usually borne singly, sometimes (2–3) in racemiform arrays (5–20 mm wide). |
Cypselae | tan to brown, narrowly turbinate, 3–4.5 mm (usually 5-ribbed), moderately sericeous; pappi tan, 4–5.5 mm. |
tan to brown, narrowly oblanceoloid, 5–7 mm (5-ribbed), densely sericeous; pappi tan, 8–9 mm. |
2n | = 18. |
|
Ericameria watsonii |
Ericameria winwardii |
|
Phenology | Flowering late summer–fall. | Flowering late summer–fall. |
Habitat | Rock outcrops, desert scrub, pinyon-juniper, ponderosa pine communities | Silty-clay and clay-shale slopes |
Elevation | 1300–3400 m (4300–11200 ft) | 2000–2200 m (6600–7200 ft) |
Distribution |
AZ; NV; UT |
ID; WY |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 77. | FNA vol. 20, p. 77. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Haplopappus watsonii | E. discoidea var. winwardii |
Name authority | (A. Gray) G. L. Nesom: Phytologia 68: 152. (1990) | (Dorn & Delmatier) R. P. Roberts & Urbatsch: Sida 21: 1562. (2005) |
Web links |