Difference between revisions of "Ambrosia chamissonis (Lessing) Greene (Q2721)"
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Latest revision as of 12:52, 24 June 2022
Ambrosia chamissonis is a taxon with the rank species within the genus Ambrosia
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Ambrosia chamissonis (Lessing) Greene
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Ambrosia chamissonis is a taxon with the rank species within the genus Ambrosia
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Statements
taxon/id/Ambrosia chamissonis (Lessing) Greene
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Ambrosia chamissonis (Lessing) Greene
Ambrosia chamissonis
(Lessing) Greene
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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CA-BC
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Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
CA-BC
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US-AK
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US-CA
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US-OR
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US-WA
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Stems prostrate or decumbent.
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Leaves mostly alternate;
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petioles 15–30 (–45+) mm;
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blades rounded-deltate to ovate or obovate, 20–45 (–70+) × 10–25 (–50+) mm overall, not lobed or 1–2 (–3) -pinnately lobed, bases cuneate, ultimate margins entire or toothed, abaxial and adaxial faces strigillose to sericeous.
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Pistillate heads clustered, proximal to staminates;
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Staminate heads: peduncles 0.5–2 mm;
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involucres shallowly cupshaped, 4–6+ mm diam., strigillose;
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florets 8–25 (–50).
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Burs: bodies fusiform to ± pyriform, 4–7+ mm, ± strigillose to pilosulous, spines 8–16+, scattered, stoutly conic or flattened to triquetrous-subulate, 0.5–1.5+ mm, tips straight.
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rounded-deltate
ovate or obovate
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1-2(-3)-pinnately; 1-2(-3)-pinnately
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flattened
triquetrous-subulate
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