Spiraea alba Du Roi (Q4417)
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Spiraea alba is a taxon with the rank species within the genus Spiraea
| Language | Label | Description | Also known as |
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| English |
Spiraea alba Du Roi
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Spiraea alba is a taxon with the rank species within the genus Spiraea
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Statements
taxon/id/Spiraea alba Du Roi
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Spiraea alba Du Roi
Spiraea alba
Du Roi
FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
accepted
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CA-AB
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CA-MB
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CA-NB
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CA-NS
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CA-ON
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CA-PE
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CA-QC
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CA-SK
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US-CT
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US-DE
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US-IL
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US-IN
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US-IA
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US-KY
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US-ME
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US-MA
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US-MD
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US-MI
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US-MN
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US-MO
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US-NC
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US-ND
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US-NH
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US-NJ
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US-NY
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US-OH
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US-PA
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US-RI
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US-SD
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US-TN
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US-VA
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US-VT
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US-WV
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US-WI
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Stems erect, unbranched.
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Leaves: petiole 2–8 mm, puberulent or sparsely hairy;
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blade narrowly lanceolate to oblanceolate or broadly oblanceolate to obovate, 2–9 × 0.5–3 cm, length 3–5 times width, chartaceous or membranous, base cuneate to rounded, margins finely to coarsely, sharply serrate to serrulate (sometimes doubly so on long-shoot leaves), number of primary and secondary serrations 0.5–1.1 times number of secondary-veins (excluding inter-secondary veins), venation pinnate craspedodromous, secondary-veins not prominent, irregularly terminating in primary teeth, inter-secondary veins usually 8–12+ per leaf, apex acute to obtuse, abaxial surface mostly glabrous, adaxial glabrous.
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Inflorescences mostly terminal, narrowly conic to open, pyramidal panicles, 5–20 × 3–10 cm height 1.4–3.5 times diam.;
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branches usually in axils of leaves, puberulent to pubescent.
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Pedicels 1–2 (–3) mm, glabrous or glabrate.
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Flowers 3–8 mm diam.;
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hypanthia hemispheric, 0.6–0.8 mm, abaxial surface usually puberulent to sparsely strigose, sometimes glabrate or glabrous, adaxial glabrous;
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sepals triangular, 0.8–1.5 mm;
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petals usually white, sometimes pink-tinged (in bud), suborbiculate, 1.3–2 (–3) mm;
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stamens 30–50, 1–2 times petal length.
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Follicles oblanceoloid, 3–4 mm, shiny, glabrous.
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narrowly lanceolate
oblanceolate or broadly oblanceolate
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0.5-1.1 times number of secondary-veins
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