Ericameria palmeri |
Ericameria linearifolia |
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Palmer goldenweed, Palmer's goldenbush |
interior goldenbush, narrowleaf goldenbush |
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Habit | Plants 50–400 cm. | Plants 40–150 cm. | ||||
Stems | erect, much branched, twigs crowded, green when young, becoming reddish brown to gray, glabrous or sparsely hairy, usually covered with resin-filled pits. |
erect to spreading, green when young, fastigiately branched, glabrous, resinous. |
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Leaves | (moderately crowded) ascending to spreading; blades linear to narrowly oblanceolate (terete, sulcate, or flattened), 5–50 × 0.5–2 mm, midnerves obscure or evident abaxially, apices acute, faces glabrous or moderately hairy, gland-dotted (in circular, deep pits), resinous; axillary fascicles with 1–10 leaves, shorter than subtending leaves. |
usually ascending or spreading; blades filiform to narrowly oblanceolate (terete or flattened, adaxially sulcate to concave), 12–55 × 0.5–3 mm, midnerves evident, usually not raised, apices acute to acuminate, faces glabrous or sparsely hairy, gland-dotted (in circular, deep pits), resinous; axillary fascicles of 2–15 leaves, shorter than subtending leaves. |
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Peduncles | 2–15 mm (bracts 5–10+, leaflike). |
20–70 mm (mostly ebracteate). |
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Involucres | turbinate to subcampanulate, 4–7 × 2.5–4 mm. |
hemispheric, 8–14 × 8–18 mm. |
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Ray florets | 2–8; laminae 4–5 × 1–1.8 mm. |
3–18; laminae elliptic to lanceolate, 7–15 × 2–5 mm. |
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Disc florets | 6–20; corollas 5–7 mm. |
16–60; corollas 6–10 mm. |
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Phyllaries | 16–24 in 3–5 series, mostly tan, narrowly oblong to elliptic, 1.5–6 × 0.4–0.8 mm, unequal, mostly chartaceous, midnerves evident on at least distal 1/2, slightly to strongly thickened, expanded distally, (margins narrowly membranous, sometimes ciliate distally) apices acute to rounded, abaxial faces glabrous, outer sometimes gland-dotted (sessile), frequently resinous. |
24–32 in 2–3 series, green to tan, ovate to lanceolate, 4–10 × 0.5–3 mm, subequal, outer sometimes wholly herbaceous, usually mostly chartaceous, sometimes with green, medial stripes, midnerves conspicuous, raised, 1–2 collateral nerves often present, (margins membranous, minutely lacerate to fimbriate) apices acute to acuminate, abaxial faces usually glabrous, sometimes sparsely hairy, often stipitate-glandular, resinous. |
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Heads | in racemiform to thyrsiform arrays (to 50 × 2–15 cm). |
usually borne singly. |
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Cypselae | tan to brown, subcylindric, 3.5–4 mm, moderately to densely hairy; pappi off-white to brown, 5–8 mm. |
tan to brown, narrowly oblanceoloid, somewhat flattened, 4–5 mm (2-ribbed), sericeous to villous; pappi silvery, 5.8–7 mm. |
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2n | = 18. |
= 18. |
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Ericameria palmeri |
Ericameria linearifolia |
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Phenology | Flowering spring–early summer. | |||||
Habitat | Rocky or sandy soils of mountainsides, dry creek beds, deserts, mesas, and interior plains | |||||
Elevation | 70–2000 m (200–6600 ft) | |||||
Distribution |
CA; nw Mexico
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AZ; CA; NM; NV; TX; UT
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 70. | FNA vol. 20, p. 61. | ||||
Parent taxa | Asteraceae > tribe Astereae > Ericameria | Asteraceae > tribe Astereae > Ericameria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Haplopappus palmeri | Haplopappus linearifolius, Haplopappus linearifolius subsp. interior | ||||
Name authority | (A. Gray) H. M. Hall: Univ. Calif. Publ. Bot. 3: 53. (1907) | (de Candolle) Urbatsch & Wussow: Brittonia 31: 273. (1979) | ||||
Web links |