Rumex acetosella L.
  • Sp. Pl.
  • azedinha


Cite taxon page as 'WFO (2020): Rumex acetosella L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000403586. Accessed on: 26 Sep 2020'

General Information

Herbs perennial, dioecious. Rhizomes horizontal, ligneous. Stems usually numerous from rhizome, erect or ascending, 15-35(-45) cm tall, slender, finely grooved, branched above middle. Basal leaves hastate, rarely without basal leaves, 2-4 cm × 3-6(-10) mm, glabrous, central lobe ovate-lanceolate, lanceolate, or linear, basal lobes spreading or curved, sometimes multifid, margin above basal lobes entire, apex acute or obtuse; cauline leaves smaller upward. Petiole short or in upper cauline leaves nearly absent; ocrea fugacious, white, membranous. Inflorescence terminal, paniculate. Flowers unisexual. Pedicel 2-2.5 mm, articulate near base of tepals. Male flower: outer tepals small; inner tepals elliptic, ca. 1.5 mm. Female flower: outer tepals lanceolate, ca. 1 mm, not reflexed in fruit; inner tepals slightly enlarged in fruit; valves ovate, 1-1.6 mm, without tubercles, net veined, base rounded to broadly cuneate, margin entire, apex acute. Achenes brown, shiny, broadly ovoid, trigonous, 1-1.5 mm. Fl. Jun-Jul, fr. Jul-Aug. 2n = 14, 42.

  • Provided by: [B].Flora Of CHina @ efloras.org
    • Source: [
    • 4
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    Plants perennial, glabrous, with vertical rootstock and/or creeping rhizomes. Stems erect or ascend-ing, several from base, branched in distal 1/ 2 (in inflorescence), 10-40(-45) cm; shoots variable. Leaves: ocrea brownish at base, silvery and lacerated in distal 1/ 2; blade normally obovate-oblong, ovate-lanceolate, lanceolate-elliptic, or lanceolate, occasionally, linear-lanceolate to almost linear, 2-6 × 0.3-2 cm, base hastate (with spreading, entire or sometimes multifid, dissected lobes), occasionally without evident lobes, then base broadly cuneate, margins entire, flat or nearly so, apex acute or obtuse. Inflorescences terminal, usually occupying distal 2- 3 of stem, usually lax and interrupted to top, broadly or narrowly paniculate. Pedicels 1-3 mm. Flowers (3-)5-8(-10) in whorls; inner tepals not or slightly enlarged, normally 1.2-1.7(-2) × 0.5-1.3 mm (free wing absent or barely visible), base cuneate, apex obtuse or subacute. Achenes brown or dark brown, 0.9-1.5 × 0.6-0.9 mm. 2n = 14, 28, 42.

  • Provided by: [G].Flora of North America @ efloras.org
    • Source: [
    • 5
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    Low delicate glabrous perennials with slender creeping rootstocks. Leaves glabrous, lanceolate-hastate, apically acute to rounded, 1-3 cm. long, 3-8 mm. broad; petioles 1-5 cm. long; ochreae mostly 0.5-1 cm. long, tardily deciduous. Inflorescences of panicles of remote few-flowered verticils. Flowers dioecious, on pedicels mostly less than 3 mm. long; outer tepals oblong to narrowly ovate, about 0.5 mm. long, scarcely accrescent; inner tepals broadly ovate, about 1 mm. long, scarcely accrescent, not tuberculate; stamens 6 discrete, the filaments less than 0.3 mm. long, the anthers 0.5-1 mm. long, bilocular and loculicidal; ovary trigonous, the 3 styles spreading, with 3 peltate fimbrillate stigmata. Achene triquetrous, brown, dull and rough, often slightly exserted, about 1 mm. long.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 6
    • ]. 

    "Dioecious perennial 1–4 dm from slender creeping roots; lvs variable, usually 3-lobed, the terminal lobe narrowly elliptic to oblong, the lateral much smaller, triangular, divergent; lf-base below the lobes truncate to long-cuneate; infl sometimes half the length of the shoot; pedicel jointed next to the fl; outer tep lanceolate; inner tep in male fls 1.5–2 mm, obovate, in female broadly ovate; achene 1.5 mm, shiny golden brown, closely invested by the valves; 2n=14, 28, 42. Fields, lawns, and waste places, in acid soils; native of Eurasia, naturalized throughout most of N. Amer., and highly variable."

  • Provided by: [E].New York Botanical Garden
    • Source: [
    • 7
    • ]. 

    Morphology

    Inner tepals of ♀ flowers closely appressed to and accrescent with the nut; outer tepals small, lanceolate.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 3
    • ]. 

    Nut light brown, sharply trigonous, ± 1 mm. long and approximately as broad.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 3
    • ]. 

    Ocreae hyaline, 4–5 mm. long, readily tearing.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 3
    • ]. 

    A slender perennial, with erect or decumbent stems, seldom exceeding 30 cm. tall, arising from a basal tuft of leaves.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 3
    • ]. 

    Male flowers 2–2.5 mm. across, the outer tepals oblong-lanceolate, partly appressed to the inner; inner tepals greenish-brown becoming tinged with red. Anthers yellow, 1 mm. long, longer than the filaments.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 3
    • ]. 

    Inflorescence slender, paniculate, much-branched, leafless; the flowers borne in close fascicles up to 5 mm. apart.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 3
    • ]. 

    Leaves long-petioled, hastate, often narrowly so, apically subacute, basally decurrent; the terminal lobe seldom exceeding 4 cm. in length; basal lobes much shorter, narrow, spreading outward and often turning forward; immature leaves often unlobed, linear.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 3
    • ]. 

    Distribution Map

     
    • Native distribution
    Found in
    • Southern America Brazil Paraní
    • Rio Grande do Sul
    • Santa Catarina
    • Minas Gerais
    • Rio de Janeiro
    • São Paulo

    Other Local Names

    NameLanguageCountry
    azedinhaPortuguese
    Sheep or field sorrel, oseille, petite oseille, sûrette

     Information From

    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • A Missouri Botanical Garden
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Missouri Botanical Garden
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • C Missouri Botanical Garden
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • D
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • E Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    http://floradobrasil.jbrj.gov.br
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • F Group Brazil Flora, REFLORA Program
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • G Flora of North America Association
    Polygonaceae
    World Flora Online Data. 2017.
    • H CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • I CC0 1.0 Universal (CC0 1.0).