View source for Spiraea thunbergii

{{Treatment/ID
|accepted_name=Spiraea thunbergii
|accepted_authority=Siebold ex Blume
|publications={{Treatment/Publication
|title=Bijdr. Fl. Ned. Ind.
|place=17: 1115. 1827
|year=1827
}}
|common_names=Thunberg’s meadowsweet
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Spiraeeae;Spiraea;Spiraea thunbergii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Amygdaloideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Spiraeeae]]</div><div class="higher-taxon"><small>genus</small>[[Spiraea]]</div><div class="higher-taxon"><small>species</small>[[Spiraea thunbergii]]</div></div>
|volume=Volume 9
|mention_page=page 398, 399, 400
|treatment_page=page 409
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> 10–20 dm. <b>Stems</b> spreading to arching, densely branched. <b>Leaves</b> 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. <b>Inflorescences</b> mostly axillary, hemispheric panicles, (2–)3–7-flowered, sessile on leafless stems in spring, 2–6 × 2–6 cm; branches glabrous. <b>Pedicels</b> 5–8 mm, glabrous. <b>Flowers</b> 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. <b>Follicles</b> oblanceoloid, 1.5–2 mm, glabrous. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–May; fruiting Apr–Oct.
|habitat=Abandoned homesteads, meadows, roadsides, pastures
|elevation=0–500 m
|distribution=Ont.;Ala.;Conn.;Ga.;Kans.;La.;Md.;Miss.;Nebr.;N.Y.;N.C.;Pa.;Asia.
|discussion=<p><i>Spiraea thunbergii</i> flowers very early in the spring and may be easily observed due to the obvious flowers on branches lacking leaves; because it can thrive in a variety of soils, it will often persist as the native vegetation returns. Although established in a number of areas, it does not appear to spread aggressively or compete strongly with native species.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Spiraea thunbergii
|authority=Siebold ex Blume
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Rosaceae
|phenology=Flowering Mar–May; fruiting Apr–Oct.
|habitat=Abandoned homesteads, meadows, roadsides, pastures
|elevation=0–500 m
|distribution=Ont.;Ala.;Conn.;Ga.;Kans.;La.;Md.;Miss.;Nebr.;N.Y.;N.C.;Pa.;Asia.
|introduced=true
|reference=None
|publication title=Bijdr. Fl. Ned. Ind.
|publication year=1827
|special status=Introduced
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V9/V9_689.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Spiraeeae
|genus=Spiraea
|species=Spiraea thunbergii
}}<!--

-->[[Category:Treatment]][[Category:Spiraea]]