View source for Duchesnea

{{Treatment/ID
|accepted_name=Duchesnea
|accepted_authority=Smith
|publications={{Treatment/Publication
|title=Trans. Linn. Soc. London
|place=10: 372. 1811
|year=1811
}}
|common_names=Mock- or Indian-strawberry
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Potentilla sect. Duchesnea
|authority=(Smith) Dikshit & Panigrahi
|rank=section
}} {{Treatment/ID/Synonym
|name=Potentilla subg. Duchesnea
|authority=(Smith) M. Shah & Wilcock
|rank=subgenus
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Duchesnea
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Rosoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Potentilleae]]</div><div class="higher-taxon"><small>genus</small>[[Duchesnea]]</div></div>
|etymology=For Antoine Nicolas Duchesne, 1747–1827 French botanist and monographer of Fragaria
|volume=Volume 9
|mention_page=page 120, 122, 124, 133, 219
|treatment_page=page 272
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, ± matted, 0.5–3 dm, sparsely hairy; stoloniferous. <b>Stems</b>: number not recorded, prostrate or spreading to weakly erect, stolon nodes bearing single leaves or condensed shoots, consisting of paired (1–)3-lobed green bractlets and 1+ leaves, developing into new plantlets, adventitious roots, and peduncles. <b>Leaves</b> often winter-persistent, basal or cauline, alternate, ternate; stipules persistent, proximally adnate to base of petiole, sheathing, broadly lanceolate to narrowly ovate, margins entire; petiole present; blade ± cordate in outline, (1–)2–7 cm, foliaceous, leaflets 3, elliptic to obovate, margins flat, ± doubly serrate or crenate, venation pinnate, surfaces sparsely pilose or strigose (at least abaxially). <b>Inflorescences</b> axillary at stolon nodes, flowers solitary; bracts absent; bracteoles absent. <b>Pedicels</b> present, straight. <b>Flowers</b> [5–]15–20 mm diam.; epicalyx bractlets 5; hypanthium cupulate, 1–3 × 2.5–5 mm; sepals 5, spreading to erect, broadly lanceolate to ovate; petals 5, yellow, narrowly obcordate to obovate, ± equal to or shorter than sepals; stamens 20, 25, or 30, shorter than petals, filaments filiform, glabrous, thecae paired on sides of narrow connective, dehiscing by broad lateral slits; torus turbinate to hemispheric; carpels 50–100, glabrous, styles subterminal, filiform; ovule 1. <b>Fruits</b> accessory; aggregated achenes, 50–100 or less, borne on enlarged torus, superficial on flesh, obliquely ovoid, [8–]10–15(–20) mm, glabrous; torus reddish, compressed ovoid, [0.8–]1–1.5 cm, fleshy (not pulpy), apex rounded, glabrous; hypanthium persistent; sepals persistent, spreading; styles tardily deciduous, jointed. <b>x</b> = 7.</span><!--

-->{{Treatment/Body
|distribution=Asia;introduced also in South America;Europe;Africa.
|introduced=true
|discussion=<p>Species 2 (1 in the flora).</p><!--
--><p><i>Duchesnea</i> is superficially similar to <i>Fragaria</i> in its fleshy red fruit and ternate leaves but differs in having yellow petals, doubly toothed leaflets, and protruding achenes, among other characteristics. The similarities result from convergence; phylogenetically, <i>Duchesnea</i> nests within <i>Potentilla</i> near sect. <i>Potentilla</i>. It is retained here as a distinct genus because of characteristics that would be anomalous in <i>Potentilla</i>, that is, condensed shoot structure at stolon nodes, enlarged 3-lobed epicalyx bractlets, and accessory fruit structure.</p><!--
--><p>Our infrageneric taxonomy follows Li C. L. et al. (2003b), in which the stable diploid (2n = 14) <i>Duchesnea</i> chrysantha (Zollinger & Moritzi) Miquel is recognized as a distinct species in eastern Asia. In contrast, the most common phase of <i>D. indica</i>, which is the one naturalized in North America, appears to be a dodecaploid (2n = 84), although various other numbers have been reported (2n = 14, 21, 28, 49, 56), mainly from Europe. Morphological differences include achenes tuberculate in <i>D. chrysantha</i> versus smooth in <i>D. indica</i>.</p>
|tables=
|references={{Treatment/Reference
|id=hara1959a
|text=Hara, H. and S. Kurosawa. 1959. On the Duchesnea indica group. J. Jap. Bot. 34: 161–166.
}}
}}<!--

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-->{{#Taxon:
name=Duchesnea
|author=Barbara Ertter;James L. Reveal
|authority=Smith
|rank=genus
|parent rank=tribe
|synonyms=Potentilla sect. Duchesnea;Potentilla subg. Duchesnea
|basionyms=
|family=Rosaceae
|distribution=Asia;introduced also in South America;Europe;Africa.
|introduced=true
|reference=hara1959a
|publication title=Trans. Linn. Soc. London
|publication year=1811
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V9/V9_435.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Duchesnea
}}<!--

-->[[Category:Treatment]][[Category:Rosaceae tribe Potentilleae]]