Oxalis stricta L.
  • Sp. Pl. : 435 (1753) 
  • Upright yellow wood-sorrel


Cite taxon page as 'WFO (2024): Oxalis stricta L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000387064. Accessed on: 24 Feb 2024'

Local Descriptions

Order descriptions by:

General Information

Annuals or short-lived perennials, all vegetative parts (except petioles) variably pubescent with simple and multiseptate hairs. Stems to 30 cm, usually single when young, erect, branching and finally decumbent with age but not rooting at nodes; underground stolons usually present. Stipules absent or rounded and inconspicuous. Leaves alternate or sometimes almost opposite or whorled; petiole (2-)3-8(-12) cm, pubescent with simple and at least some septate trichomes at base; leaflet blades obcordate, (0.3-)0.8-1.8(-2.5) × (0.3-)1.2-3(-3.5) cm, green, abaxially sparsely pubescent, adaxially glabrous, apex deeply emarginate. Inflorescences dichotomous cymes, sometimes umbellate, 2-5(-7)-flowered; peduncle ca. 2 × as long as petioles or longer, base with a swollen articulation; bracts linear, 1.5-2 × ca. 1 mm, glabrous or with very sparse trichomes. Pedicels (3-)5-10 mm, erect in fruit, pubescent with simple and septate hairs. Sepals linear to narrowly elliptic, 4-7 × 1-2 mm, margin ciliate. Petals pale yellow, oblong-obovate, 5-10 × 2-3 mm. Capsule cylindric, 8-15 × 2-3.5 mm, 5-sided, glabrous or pubescent with only septate trichomes. Seeds 4-10 per locule, brown to brownish red, ovoid-oblong, 1-1.5 × 0.8-1 mm, transversely ridged. Fl. and fr. Feb-Oct. 2n = 24.

  • Provided by: [A].Flora of China @ efloras.org
    • Source: [
    • 1
    • ]. 

    Herbs annual or short-lived perennial, caulescent, rhizomes present, , stolons absent, bulbs absent. Aerial stems 1(–3) from base, erect or later leaning or falling over and decumbent, , 20–60(–90) cm, herbaceous, villous, . Leaves basal and cauline; stipules rudimentary; petiole 2–8 cm, ; leaflets 3, light green to yellowish green, obcordate, (8–)10–20(–30) mm, lobed 1/5–1/3 length, surfaces glabrous, oxalate deposits absent. Inflorescences usually regular cymes, rarely irregular cymes, (1–)5–7(–15)-flowered; peduncles 3–9(–11) cm. Flowers homostylous or slightly to strongly heterostylous, ; sepal apices without tubercles; petals yellow, without red lines, (6–)8–11 mm. Capsules ± cylindric, nearly terete, abruptly tapering to apex, 8–15 mm, villous to puberulent or glabrate, . <Seeds brown, transverse ridges rarely white>. 2n = 18, 24.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 2
    • ]. 

    Perennial from long slender rhizomes, prostrate to more often erect and to 5 dm; stems pubescent with spreading, blunt-tipped, septate hairs, sometimes also strigose, seldom glabrous; stipules none; lfls 1–2 cm wide, usually glabrous to merely ciliate; peduncles usually exceeding the fls, 2–7-fld; pet 4–9 mm, yellow; fr 8–15 mm, provided with spreading, flexuous, septate hairs; 2n=18–24. Nearly cosmopolitan weed, often in natural habitats as well, probably originally native to N. Amer. Numerous infraspecific taxa are often defined on the distribution and orientation of the hairs. (O. europaea; O. corniculata, misapplied; Xanthoxalis stricta; X. bushii; X. cymosa; X. rufa)

  • Provided by: [D].Manual of Vascular Plants of Northeastern US and Canada
    • Source: [
    • 5
    • ]. 

    Morphology

    10–30 cm hoch, aufrecht, mit einzelligen und gegliederten Haaren. Nebenblätter fehlend. Blätter ± gegen- oder quirlständig, lang gestielt. Blattform wie bei O. acetosella. Blüten gelb, 4–7 mm lang, in 1–7blütigem, lockerem, doldige

  • Provided by: [B].Flora Helvetica â Illustrierte Flora der Schweiz
    • Source: [
    • 4
    • ]. 

    Ecology

    6–9. Äcker, Gärten, Schuttplätze, kollin(-montan). CH.

  • Provided by: [B].Flora Helvetica â Illustrierte Flora der Schweiz
    • Source: [
    • 4
    • ]. 
    Manual of Vascular Plants of Northeastern US and CanadaGeneral Information

    Perennial from long slender rhizomes, prostrate to more often erect and to 5 dm; stems pubescent with spreading, blunt-tipped, septate hairs, sometimes also strigose, seldom glabrous; stipules none; lfls 1–2 cm wide, usually glabrous to merely ciliate; peduncles usually exceeding the fls, 2–7-fld; pet 4–9 mm, yellow; fr 8–15 mm, provided with spreading, flexuous, septate hairs; 2n=18–24. Nearly cosmopolitan weed, often in natural habitats as well, probably originally native to N. Amer. Numerous infraspecific taxa are often defined on the distribution and orientation of the hairs. (O. europaea; O. corniculata, misapplied; Xanthoxalis stricta; X. bushii; X. cymosa; X. rufa)

    Flora of North America @ efloras.orgGeneral Information

    Herbs annual or short-lived perennial, caulescent, rhizomes present, , stolons absent, bulbs absent. Aerial stems 1(–3) from base, erect or later leaning or falling over and decumbent, , 20–60(–90) cm, herbaceous, villous, . Leaves basal and cauline; stipules rudimentary; petiole 2–8 cm, ; leaflets 3, light green to yellowish green, obcordate, (8–)10–20(–30) mm, lobed 1/5–1/3 length, surfaces glabrous, oxalate deposits absent. Inflorescences usually regular cymes, rarely irregular cymes, (1–)5–7(–15)-flowered; peduncles 3–9(–11) cm. Flowers homostylous or slightly to strongly heterostylous, ; sepal apices without tubercles; petals yellow, without red lines, (6–)8–11 mm. Capsules ± cylindric, nearly terete, abruptly tapering to apex, 8–15 mm, villous to puberulent or glabrate, . <Seeds brown, transverse ridges rarely white>. 2n = 18, 24.

    Flora Helvetica â Illustrierte Flora der SchweizMorphology

    10–30 cm hoch, aufrecht, mit einzelligen und gegliederten Haaren. Nebenblätter fehlend. Blätter ± gegen- oder quirlständig, lang gestielt. Blattform wie bei O. acetosella. Blüten gelb, 4–7 mm lang, in 1–7blütigem, lockerem, doldige

    Ecology

    6–9. Äcker, Gärten, Schuttplätze, kollin(-montan). CH.

    Flora of China @ efloras.orgGeneral Information

    Annuals or short-lived perennials, all vegetative parts (except petioles) variably pubescent with simple and multiseptate hairs. Stems to 30 cm, usually single when young, erect, branching and finally decumbent with age but not rooting at nodes; underground stolons usually present. Stipules absent or rounded and inconspicuous. Leaves alternate or sometimes almost opposite or whorled; petiole (2-)3-8(-12) cm, pubescent with simple and at least some septate trichomes at base; leaflet blades obcordate, (0.3-)0.8-1.8(-2.5) × (0.3-)1.2-3(-3.5) cm, green, abaxially sparsely pubescent, adaxially glabrous, apex deeply emarginate. Inflorescences dichotomous cymes, sometimes umbellate, 2-5(-7)-flowered; peduncle ca. 2 × as long as petioles or longer, base with a swollen articulation; bracts linear, 1.5-2 × ca. 1 mm, glabrous or with very sparse trichomes. Pedicels (3-)5-10 mm, erect in fruit, pubescent with simple and septate hairs. Sepals linear to narrowly elliptic, 4-7 × 1-2 mm, margin ciliate. Petals pale yellow, oblong-obovate, 5-10 × 2-3 mm. Capsule cylindric, 8-15 × 2-3.5 mm, 5-sided, glabrous or pubescent with only septate trichomes. Seeds 4-10 per locule, brown to brownish red, ovoid-oblong, 1-1.5 × 0.8-1 mm, transversely ridged. Fl. and fr. Feb-Oct. 2n = 24.

    Synonyms

    Other Local Names

    NameLanguageCountry
    Upright yellow wood-sorrel
    Oxalis dresséFrenchCH
    Pauncucu drizzàRaeto-RomanceCH
    Acetosella minoreItalianCH
    Aufrechter SauerkleeGermanCH

     Information From

    Flora of China @ efloras.org
    World Flora Online Data. 2021.
    • A Missouri Botanical Garden
    Flora Helvetica â Illustrierte Flora der Schweiz
    http://www.flora-helvetica.ch
    World Flora Online Data. 2021.
    • B All Rights Reserved
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    World Flora Online Data. 2021.
    • C Flora of North America Association
    Manual of Vascular Plants of Northeastern US and Canada
    https://www.nybg.org/
    World Flora Online Data. 2021.
    • D Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Oxalidaceae
    https://powo.science.kew.org/
    World Flora Online Data. 2023.
    • E CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2023.
    • F CC0 1.0 Universal (CC0 1.0).