Trianthema L.
  • Sp. Pl. 1: 223. 1753. (1 May 1753)
  • Horse-purslane [Greek treis, three, and anthemon, flower]


Cite taxon page as 'WFO (2020): Trianthema L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000038870. Accessed on: 27 May 2020'

General Information

Herbs annual to perennial. Stems procumbent to ascending, often much branched. Leaves opposite, entire, those of a pair unequal, terete to flat, petiole broadening at base forming a sheath around stem. Inflorescences of solitary or clustered flowers subtended by scarious bracts and bracteoles. Flowers sessile or pedicellate. Perigone tube campanulate, short to long, smooth to hairy; lobes 5, inside white, green, or pink to purple, outside fleshy. Stamens 5 to many, adnate with perigone. Perigynous, ovary with a truncate or impressed apex, 1-loculed; stigma 1. Capsule terete or turbinate, operculum with 1 or 2 seeds falling off as a whole. Seeds globose-reniform to lentil-shaped.

  • Provided by: [G].Flora Of CHina @ efloras.org
    • Source: [
    • 8
    • ]. 

    TRIANTHEMA L.

    Trianthema portulacastrum L., Sp. Pl. 223. 1753; T. monogyna L.; T. procumbens Mill.

    Hierbas anuales, tallos jóvenes a veces con una línea de tricomas decurrentes entre los nudos, glabrescentes, erectas a postradas, suculentas. Hojas opuestas, desiguales, con la hoja más grande de cada par al menos dos veces más grande que la pequeña, simples, obovadas a suborbiculares o espatuladas, glabras, la más grande de cada par 1–2.9 (–4) cm de largo y (0.5–) 0.9–2.9 cm de ancho, ápice agudo a retuso y frecuentemente mucronado, base cuneada; pecíolos connados en la base y formando una vaina alrededor del tallo, aquellos de las hojas más grandes 4–19 mm de largo, estípula deltoide, 1.3–4.7 mm de largo, remotamente serrada o entera. Flores solitarias, axilares, sésiles; tubo calicino campanulado, 1.6–4.1 mm de largo, parcialmente cubierto por la vaina peciolar, los lobos 5, imbricados, lanceolados, glabros, 0.9–2.4 mm de largo y 0.8–1.5 mm de ancho, con un apéndice en forma de cornículo, barbado, 0.6–0.8 mm de largo en la superficie exterior justo debajo del ápice, rosados o morados internamente; estaminodios ausentes, estambres 10, insertos en la boca del tubo del cáliz, filamentos libres, 1–2.5 mm de largo, anteras 0.4–0.7 mm de largo y 0.3 mm de ancho; ovario súpero, 1-locular, 1.6–3 mm de largo y 1–2 mm de ancho, pocos óvulos, placentación basal-parietal, estilo 1, 1.1–2.8 mm de largo. Fruto una cápsula circuncísil casi envuelta en la vaina peciolar, turbinada, truncada y crestada en un lado en el ápice, 4.5–6 mm de largo y 2.5–3.3 mm de ancho; semillas 3–8, reniformes, 1.5–1.9 mm de largo y 1.5–1.7 mm de ancho, arrugadas, de color café-rojizo a negro.

    Común en playas, en las costas pacífica y atlántica, menos común en tierra adentro; 0–500 m; fl y fr may–dic; Marshall 6634, Stevens 23065; pantropical. Un género con ca 15 especies distribuidas en los trópicos y subtrópicos de ambos hemisferios.

  • Provided by: [H].Flora de Nicaragua
    • Source: [
    • 9
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    Herbaceous or suffruticose plants, branched, upright or prostrate. Leaves simple, opposite, strikingly unequal, fleshy, obovate to rounded-spatulate, the petioles connate into a petiolar sheath surrounding the stem; stipulate. Inflores- cences axillary, cymose or the flowers solitary. Flowers bisexual, sessile or pedicel- late. Perianth 5-parted, connate below, the lobes appendaged on the outer surface beneath the apex, imbricate. Stamens 5 or more, inserted on the perianth tube or free and monadelphic. Ovary superior, 1- or 2-loculate, the ovules campylo- tropous, few on the axile placenta, the styles 1 or 2. Capsule circunmscissile; seeds few, reniform, the testa often wrinkled, estrophiolate.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 10
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    Herbs [shrubs], annual or perennial, glabrous, hairy, or papillate. Roots fibrous. Stems usually prostrate, spreading, branched from base, sometimes woody. Leaves cauline, subopposite, petiolate, those of each pair unequal; stipules attached to margin of petiole, bidentate, usually papery; blade terete or flat, linear to orbiculate, base tapered, margins entire. Inflorescences axillary, flowers solitary or in cymes; bracts foliaceous; bracteoles 2. Flowers inconspicuous, 4 mm diam.; calyx lobes 5, adaxial surface colored, with subapical, abaxial, mucronate appendages; petals and petaloid staminodia absent; stamens perigynous, 5-10[-20], when 5, alternating with calyx lobes; pistil 2-carpellate; ovary superior, 1-2-loculed; placentation basal; ovules 1-12; styles 1-2, longitudinally papillate; stigmas 2. Fruits capsules, dehiscence circumscissile near base; operculum flat, ovoid, or globose, winged or mucronate. Seeds 1-12, brown to black, ridged, triangular, globose, or reniform, smooth or papillate; arils elongate.

  • Provided by: [E].Flora of North America @ efloras.org
    • Source: [
    • 11
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    "Fls perfect, perigynous; sep 5, each usually with a dorsal appendage near the tip; pet none; stamens mostly 5–10; ovary unilocular or bilocular, with accordingly 1 or 2 styles; ovules few; capsule circumscissile; seeds arillate; succulent, shortly taprooted herbs with opposite lvs basally connate into a short sheath with interpetiolar stipules; fls small, solitary or few in the axils. 20, warm reg."

  • Provided by: [F].New York Botanical Garden
    • Source: [
    • 12
    • ]. 

    Morphology

    Ovary of 1 carpel, 1-locular, with 2–? ovules; placentation parietal.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Stamens 5–?, attached to the perianth, when definite alternate with the perianth lobes.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Perianth segments distinctly united at base into a tube, the lobes ascending, mucronate behind the tip.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Prostrate, procumbent, ascending or erect, glabrous, papillose or pubescent, succulent, mostly annual herbs; stems with long often unequal internodes.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Seeds 2–?.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Leaves opposite, those of a pair often unequal, linear to almost orbicular, entire, petiolate or sessile; leaf-bases membranous, dilated, often connate in pairs and with small stipuliform lobes.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Fruit circumscissile, enclosed by the perianth, the lid ± truncate, with thickened bands, the apex thin and often depressed.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Flowers axillary, solitary or more often in groups, free or connate, ± sessile.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Leaf-bases membranous-dilated, often connate in pairs and with small stipuliform lobes

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 7
    • ]. 

    Leaves opposite, those of a pair often unequal, linear to almost orbicular, entire, petiolate or sessile

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 7
    • ]. 

    Procumbent diffuse glabrous, papulose, or pubescent succulent mostly annual herbs

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 7
    • ]. 

    Flowers axillary, solitary, fascicled or glomerulate, free or connate, sessile or stalked

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 7
    • ]. 

    Calyx gamosepalous, 5-lobed; lobes usually with a distinct subapical dorsal mucro

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 7
    • ]. 

    Stamens 5-many, episepalous, when definite alternate with the calyx-lobes

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 7
    • ]. 

    Ovary of one carpel, unilocular, apex truncate or depressed around the style; ovules and seeds 2-many; placentation parietal.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 7
    • ]. 

    Habit

    Herb

  • Provided by: [C].Flora de Panama
    • Source: [
    • 10
    • ]. 

    Distribution

    About 15 species of the tropics and subtropics.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 10
    • ]. 

    Synonyms

    Other Local Names

    NameLanguageCountry
    Horse-purslane [Greek treis, three, and anthemon, flower]

     Information From

    Aizoaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    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
    • B
    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 - FZ
    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
    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.
    • E Flora of North America Association
    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.
    • F Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    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.
    • G Missouri Botanical Garden
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • H Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • I CC0 1.0 Universal (CC0 1.0).