Eriophyllum confertiflorum |
Eriophyllum mohavense |
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golden-yarrow, yellow-yarrow |
Barstow woolly sunflower, Mohave or Barstow woolly sunflower, Mojave woolly sunflower |
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Habit | Shrubs, 20–50(–100) cm. | Annuals, 1–2.5 cm. | ||||
Stems | erect (woolly). |
erect to spreading. |
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Leaves | (proximal usually mostly alternate): blades cuneate to obovate, 0.5–5 cm (the longer 1–2-pinnately lobed, lobes linear, the shorter 3–5-lobed or -toothed), ultimate margins entire, revolute, abaxial faces woolly, adaxial usually glabrate (distal leaves gradually reduced in size and lobing). |
blades spatulate to cuneate, 3.5–10 mm, sometimes 1–3-lobed (each lobe terminating in short, sharp cusp), ultimate margins entire, weakly, if at all, revolute (apices acute), faces loosely woolly. |
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Peduncles | mostly 0–2.5(–9) cm. |
± 0.1 cm. |
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Involucres | campanulate, 3–7 mm diam. |
cylindric to obconic, 1–2+ mm diam. |
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Ray florets | 0 or 4–6(–8); laminae golden yellow, 2–5 (× 1.5–3) mm. |
0. |
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Disc florets | 10–75; corollas 2–4 mm. |
± 3; corollas ± 2 mm (tubes cylindric, throats broadly cylindric, abruptly dilated, lobes glandular; anther appendages deltate, tapering distally, not glandular). |
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Phyllaries | 4–7, distinct or connate at bases (broadly elliptic or ovate, carinate, apices obtuse or acute). |
3–4, distinct. |
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Heads | (3–)4–7(–10) or 10–30+ per array. |
borne singly or in clusters. |
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Cypselae | 1.5–3.5 mm; pappi of 2–14 cuneate to oblanceolate (subequal), erose scales 0.5–1.3 mm. |
2–2.5 mm; pappi of 12–14 linear to spatulate scales ± 1.5 mm. |
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Eriophyllum confertiflorum |
Eriophyllum mohavense |
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Phenology | Flowering Apr–May. | |||||
Habitat | Sandy or gravelly areas, creosote-bush scrublands | |||||
Elevation | 500–800 m (1600–2600 ft) | |||||
Distribution |
CA; Mexico
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CA |
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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. 21, p. 361. | FNA vol. 21, p. 355. | ||||
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Bahia confertiflora | Eremonanus mohavensis | ||||
Name authority | (de Candolle) A. Gray: Proc. Amer. Acad. Arts 19: 25. (1883) | (I. M. Johnston) Jepson: Man. Fl. Pl. Calif., 1117. (1925) | ||||
Web links |