Spiraea Linnaeus (Q4416)
Spiraea is a taxon with the rank genus within the tribe Spiraeeae
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Spiraea Linnaeus
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Spiraea is a taxon with the rank genus within the tribe Spiraeeae
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Statements
taxon/id/Spiraea Linnaeus
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Spiraea Linnaeus
Spiraea
Linnaeus
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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usually rhizomatous.
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Stems 5–20+, usually erect to ascending or arching, sometimes spreading, prostrate, or decumbent;
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bark reddish to dark-brown, gray, or gray-black, exfoliating or not;
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long and short-shoots present;
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young stems tan or reddish-brown to brown, glabrous or villous.
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Leaves deciduous (tardily so in S. thunbergii, partly persistent in S. cantoniensis), cauline, alternate, dimorphic with shoot type, simple;
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blade obovate to oblanceolate, rhombic, elliptic, or linear to lanceolate, ovate, or suborbiculate, 1–10 cm, membranous, chartaceous, or coriaceous, margins flat, serrate to serrulate, dentate, or entire, venation pinnate, surfaces glabrous or hairy.
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Inflorescences mostly terminal or mostly axillary, (2–) 3–1000+-flowered, panicles or corymbiform or racemiform, hairy or glabrous;
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bracts present or absent;
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bracteoles present or absent.
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Pedicels present.
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Flowers opening before or after full foliation, 2–15 mm diam.;
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epicalyx bractlets 1 or 2;
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hypanthium usually hemispheric or campanulate, sometimes turbinate or crateriform, 0.5–2 (–5) mm, ± densely hairy or glabrous;
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sepals 5, usually erect, spreading, or reflexed, sometimes ascending, deltate, triangular, ovate-triangular, or ovate;
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petals 5, greenish, yellowish, chalky, or translucent white, white, pink [rose], or purple, ovate to obovate, suborbiculate, or orbiculate, sometimes elliptic;
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staminodes present or reduced to annulus, nectariferous;
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stamens 10–50 in 2–4 series, shorter or longer than petals;
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torus absent or reduced;
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carpels [3 or] 4 or 5 [–8], free, glabrate to tomentose, styles terminal or subterminal, stigmas capitate or discoid;
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Fruits aggregated follicles, 4 or 5, cymbiform, ellipsoid, falcate, fusiform, or oblanceoloid, (0.5–) 1.5–4 mm, coriaceous, glabrous or tomentose;
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hypanthium persistent;
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sepals persistent or deciduous, spreading, ascending, erect, or reflexed;
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styles persistent or deciduous.
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Seeds 2–4 per follicle, fusiform to oblong, 2–4 mm. x = 9.
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usually erect
ascending or arching
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reddish
dark-brown gray or gray-black
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reddish
dark-brown gray or gray-black
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reddish
dark-brown gray or gray-black
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lanceolate ovate or suborbiculate
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lanceolate ovate or suborbiculate
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lanceolate ovate or suborbiculate
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obovate suborbiculate or orbiculate
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obovate suborbiculate or orbiculate
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obovate suborbiculate or orbiculate
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