Euthamia occidentalis Nuttall (Q2252)
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Euthamia occidentalis is a taxon with the rank species within the genus Euthamia
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English |
Euthamia occidentalis Nuttall
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Euthamia occidentalis is a taxon with the rank species within the genus Euthamia
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Statements
taxon/id/Euthamia occidentalis Nuttall
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Euthamia occidentalis Nuttall
Euthamia occidentalis
Nuttall
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
accepted
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CA-BC
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Klinkenberg, B. (ed.). 2010+. E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab. for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver, B.C. http://www.eflora.bc.ca http://www.eflora.bc.ca/
CA-BC
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US-AZ
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US-CA
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US-CO
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US-ID
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US-MT
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US-NE
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US-NV
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US-NM
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US-OR
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US-UT
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US-WA
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US-WY
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Perennials or subshrubs, 40–200 cm.
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Stems (erect, stout) glabrous, glaucous.
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Leaves spreading-ascending to erect;
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blades 3-nerved or -5-nerved, linear, 82–100 × 4.3–10 mm, lengths 10–27 times widths, gradually to abruptly reduced distally, herbaceous to firm-herbaceous, margins scabrous, apices abruptly acute to acuminate, faces ± gland-dotted (18–56 dots per mm²), adaxial and vein-axils often sparsely hairy.
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Heads mostly pedunculate, in relatively narrow, elongate arrays 33–60% of plant heights (often interrupted and with multiple levels).
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Involucres campanulate, 3.7–4.9 mm.
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Phyllaries stramineous, sometimes green-tipped, outer narrowly lanceolate, inner linear (firm), apices acute to acuminate.
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Ray-florets (15–) 17–22 (–28).
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Disc-florets (7–) 9–11 (–18);
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corollas 3.1–4.2 mm. 2n = 18.
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reduced
gradually to abruptly; distally
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