Ericameria palmeri |
Ericameria lignumviridis |
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Palmer goldenweed, Palmer's goldenbush |
Greenwood's goldenbush, heath-goldenrod |
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Habit | Plants 50–400 cm. | Plants 10–30 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, green when young, becoming tan, 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. |
ascending; blades oblanceolate, 7–30 × 1.5–3 mm, midnerves evident, apices acute to apiculate, faces glabrous, resinous; axillary leaf fascicles usually present, much shorter than subtending leaves. |
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Peduncles | 2–15 mm (bracts 5–10+, leaflike). |
1–12 mm (bracts 0–3, scalelike). |
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Involucres | turbinate to subcampanulate, 4–7 × 2.5–4 mm. |
obconic, 12–15 × 4–8 mm. |
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Ray florets | 2–8; laminae 4–5 × 1–1.8 mm. |
5–8; laminae 3–4 × 0.7–2 mm. |
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Disc florets | 6–20; corollas 5–7 mm. |
8–12; corollas 9–10.5 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. |
18–28 in 3–4 series, tan, ovate or lanceolate to elliptic, 8–12 × 1–2.5 mm, subequal, outer herbaceous-tipped, inner mostly chartaceous, apices erect, acute or acuminate to cuspidate, abaxial faces glabrous, resinous. |
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Heads | in racemiform to thyrsiform arrays (to 50 × 2–15 cm). |
(3–8) in cymiform arrays. |
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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 reddish, ellipsoid, ca. 5 mm, densely hairy; pappi off-white to brown, 7.5–9 mm. |
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2n | = 18. |
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Ericameria palmeri |
Ericameria lignumviridis |
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Phenology | Flowering late summer–fall. | |||||
Habitat | Riparian areas with willows, nettles, and other bottomland plants | |||||
Elevation | ca. 1900 m (ca. 6200 ft) | |||||
Distribution |
CA; nw Mexico
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UT |
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (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. 60. | ||||
Parent taxa | Asteraceae > tribe Astereae > Ericameria | Asteraceae > tribe Astereae > Ericameria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Haplopappus palmeri | Haplopappus lignumviridis | ||||
Name authority | (A. Gray) H. M. Hall: Univ. Calif. Publ. Bot. 3: 53. (1907) | (S. L. Welsh) G. L. Nesom: Phytologia 78: 64. (1995) | ||||
Web links |