Eriophyllum ambiguum |
Eriophyllum |
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woolly sunflower |
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Habit | Herbs, subshrubs, shrubs annual or perennial; taprooted. | |
Stems | erect or decumbent, branched proximally, distally, or throughout, woolly-pubescent. |
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Leaves | cauline, usually opposite; upper sometimes alternate, lanceolate or oblanceolate to linear, bases auriculate-clasping; margins usually pinnately toothed or lobed, rarely entire; tips acute; surfaces usually somewhat woolly, sessile or petiolate. |
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Inflorescences | raceme- or panicle-like arrays, or heads solitary. |
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Involucres | campanulate or hemispheric, 3–12+ mm in diameter. |
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Receptacles | flat to columnar; paleae 0. |
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Ray florets | pistillate, fertile; rays slightly to well exceeding involucres, bright yellow, rarely white or pale yellow; lobes distinct to minute or absent. |
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Disc florets | bisexual; corollas tubular, narrowed in lower half, exceeding involucres, yellow, puberulent; lobes 5, triangular; erect or spreading; stamens slightly exserted; stigmas slightly exserted. |
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Phyllaries | in few equal series; erect, linear-lanceolate; midribs evident; tips acute or obtuse; surfaces woolly-pubescent. |
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Fruits | linear-clavate or flattened, ribbed or angled, truncate, glabrous or pubescent; pappi 0 or of 6–12 persistent, lacerate scales in 1–2 series. |
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Heads | radiate, rarely discoid; erect; peduncles bractless or few-bracted. |
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Eriophyllum ambiguum |
Eriophyllum |
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Distribution | ||
Discussion | Western North America. 13 species; 2 species treated in Flora. |
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Source | Flora of Oregon, volume 2, page 263 Kenton Chambers |
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Sibling taxa | ||
Subordinate taxa | ||
Web links |