Spiraea thunbergii Siebold ex Blume (Q4427)

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Spiraea thunbergii is a taxon with the rank species within the genus Spiraea
Language Label Description Also known as
English
Spiraea thunbergii Siebold ex Blume
Spiraea thunbergii is a taxon with the rank species within the genus Spiraea

    Statements

    taxon/id/Spiraea thunbergii Siebold ex Blume
    0 references
    Spiraea thunbergii Siebold ex Blume
    Spiraea thunbergii
    Siebold ex Blume
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    spirée de Thunberg (French)
    Thunberg's meadowsweet (English)
    Thunberg's spiraea (English)
    Thunberg’s meadowsweet (English)
    1 reference
    Newmaster, S.G., A. Lehela, M.J. Oldham, P.W.C. Uhlig & S. McMurray. 1998. Ontario Plant List. Ontario Forest Research Institute, Sault Ste. Marie, Ontario. Forest Information Paper No. 123. 550 pp.
    Flowering Mar–May; fruiting Apr–Oct.
    abandoned homesteads
    meadows
    roadsides
    pastures
    Shrubs, 10–20 dm.
    Stems spreading to arching, densely branched.
    Leaves sometimes tardily deciduous;
    petiole 1–2 mm or indistinct;
    blade linear to lanceolate, 2.5–4 × 0.3–1 cm, membranous, base acute, margins irregularly, sharply serrulate, venation pinnate eucamptodromous, secondary-veins not prominent, apex acuminate, surfaces glabrous.
    Inflorescences mostly axillary, hemispheric panicles, (2–) 3–7-flowered, sessile on leafless stems in spring, 2–6 × 2–6 cm;
    branches glabrous.
    Pedicels 5–8 mm, glabrous.
    Flowers 6–8 mm diam.;
    hypanthia crateriform, 2–4 mm, abaxial surface glabrous, adaxial glabrous or puberulent;
    sepals ovate-triangular, 1.3–2 mm;
    petals white, obovate to suborbiculate, 2–4 mm;
    staminodes 10–14;
    stamens 18–20, 0.3 times petal length.