Ericameria greenei |
Ericameria winwardii |
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Greene's goldenbush, Greene's goldenweed, Greene's heath goldenweed, rabbitbrush |
Winward's goldenbush |
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Habit | Plants 10–30 cm. | Plants 5–20 cm. |
Stems | erect to ascending, green when young, soon reddish to brownish, branched, glabrous or tomentose, 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 | mostly erect or ascending; blades spatulate (flat), 15–30 × 3–7 mm, midnerves (and sometimes 2 fainter, collateral nerves) evident (slightly raised abaxially), apices obtuse, mucronate, faces glabrous or tomentose and/or stipitate-glandular; axillary fascicles absent. |
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 | usually less than 20, rarely to 100 mm (leafy). |
1–5 mm (tomentose, bracts 0–3, phyllary-like). |
Involucres | broadly campanulate, 8–12 × 12–15 mm. |
obconic, 9–12 × 3–4 mm. |
Ray florets | (0–)1–7; laminae 7–10 × 1.5–2.8 mm. |
0. |
Disc florets | 7–20; corollas 8–9.5 mm. |
4–9; corollas ca. 9 mm. |
Phyllaries | 18–28 in 2–3 series, green to tan, lanceolate to elliptic, 10–14 × 1.3–2.7 mm, subequal (outer sometimes slightly longer than inner), outer herbaceous or with herbaceous appendages, inner mostly chartaceous, midnerves (and often 2 collateral nerves) evident, (margins often narrowly membranous, fimbriate or tomentose) apices acute, acuminate to cuspidate, abaxial faces 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 | (12–22) usually in (leafy) congested, cymiform or racemiform arrays, rarely borne singly. |
usually borne singly, sometimes (2–3) in racemiform arrays (5–20 mm wide). |
Cypselae | tan to reddish, ellipsoid, 5–7 mm, glabrous or distally hairy; pappi off-white to reddish brown, 7–9 mm. |
tan to brown, narrowly oblanceoloid, 5–7 mm (5-ribbed), densely sericeous; pappi tan, 8–9 mm. |
2n | = 18. |
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Ericameria greenei |
Ericameria winwardii |
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Phenology | Flowering summer–fall. | Flowering late summer–fall. |
Habitat | Rocky flats and sparsely wooded slopes | Silty-clay and clay-shale slopes |
Elevation | 1500–2200 m [4900–7200 ft] | 2000–2200 m [6600–7200 ft] |
Distribution |
CA; ID; OR; WA
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ID; WY |
Discussion | A tomentose entity that was recognized as Haplopappus greenei subsp. mollis differs also in other ways from typical Ericameria greenei. It may merit recognition at some level. A biosystematic and population-level investigation of this complex is needed to better understand the causes and significance of such variation. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 60. | FNA vol. 20, p. 77. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Haplopappus greenei, Haplopappus greenei subsp. mollis | E. discoidea var. winwardii |
Name authority | (A. Gray) G. L. Nesom: Phytologia 68: 153. (1990) | (Dorn & Delmatier) R. P. Roberts & Urbatsch: Sida 21: 1562. (2005) |
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