Eriophyllum confertiflorum |
Eriophyllum confertiflorum var. tanacetiflorum |
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golden-yarrow, yellow-yarrow |
golden-yarrow, tansy yarrow, tansy-flower woolly sunflower |
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Habit | Shrubs, 20–50(–100) cm. | |||||
Stems | erect (woolly). |
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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 obovate, 2–5 cm, 3–5-lobed, lobes ± oblong. |
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Peduncles | mostly 0–2.5(–9) cm. |
0–2.5(–9) cm. |
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Involucres | campanulate, 3–7 mm diam. |
5–7 mm diam. |
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Ray florets | 0 or 4–6(–8); laminae golden yellow, 2–5 (× 1.5–3) mm. |
0 or 4–6; laminae 4–5 mm. |
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Disc florets | 10–75; corollas 2–4 mm. |
35–75; corollas 3.5–4 mm. |
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Phyllaries | 4–7, distinct or connate at bases (broadly elliptic or ovate, carinate, apices obtuse or acute). |
5–7(–8), ovate, apices obtuse or acute. |
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Heads | (3–)4–7(–10) or 10–30+ per array. |
(3–)4–7(–10) per array. |
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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. |
2–3.5 mm; pappi 0.5–1.3 mm. |
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2n | = 64. |
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Eriophyllum confertiflorum |
Eriophyllum confertiflorum var. tanacetiflorum |
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Phenology | Flowering May–Jul. | |||||
Habitat | Dry sites, oak woodlands | |||||
Elevation | 300–1000 m (1000–3300 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. Variety tanacetiflorum is known only from the central Sierra Nevada foothills. At least one population is sympatric with Eriophyllum lanatum and E. confertiflorum var. confertiflorum. It may deserve specific recognition. (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. 361. | ||||
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum > Eriophyllum confertiflorum | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Bahia confertiflora | E. tanacetiflorum | ||||
Name authority | (de Candolle) A. Gray: Proc. Amer. Acad. Arts 19: 25. (1883) | (Greene) Jepson: Man. Fl. Pl. Calif., 1116. (1925) | ||||
Web links |