Merremia Dennst. ex Endl.
  • Gen. Pl. 18: 1403. 1841.


Cite taxon page as 'WFO (2020): Merremia Dennst. ex Endl. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000023812. Accessed on: 02 Jun 2020'

General Information

Herbs or shrubs, often twining, sometimes prostrate. Leaves usually petiolate, rarely sessile, margin entire, dentate, or palmately or pedately lobed or compound. Flowers axillary, solitary or in few- to many-flowered, variously branched cymose inflorescences; bracts usually small. Sepals variable in shape, often convex, subequal or outer 2 smaller, persistent, often enlarged in fruit. Corolla often yellow or white, sometimes with a darker center, funnelform or campanulate, usually glabrous, or midpetaline bands ± sericeous, sometimes only at apex; limb entire or ± 5-angled. Stamens included, often unequal; anthers often spirally twisted; filaments dilated basally, filiform distally; pollen 3-12-colpate or polyrugate, not spiny. Disc ringlike. Pistil included; ovary (imperfectly 2-)4-loculed, 4-ovuled. Style 1, filiform; stigmas 2-globular. Capsule 1-4-loculed, usually 4-valved or ± irregularly dehiscing. Seeds 4 or fewer, glabrous or pubescent to villous especially at margin.

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

    14. Merremia Dennst. ex Endl.

    Por D.F. Austin, J.A. McDonald y G. Murguía-Sánchez.

    Enredaderasherbáceas, volubles o rastreras. Hojas simples o palmaticompuestas, ovadas,hastadas, sagitadas, variablemente palmatisectas o pinnatisectas, los segmentos3-9, ovados a lineares, los márgenes enteros o sinuado-serrulados.Inflorescencias axilares, en dicasios y/o monocasios, algunas vecesumbeliformes. Flores 1-40, los pedúnculos secundarios con brácteas lineares,lanceoladas, glabras o pilosas; sépalos 5, persistentes, imbricados, ovados alanceolados, herbáceos, membranáceos acoriáceos, lisos, glabros, piloso-adpresos o hirsutos, los márgenesenteros, el ápice agudo a obtuso, atenuado, rara vez emarginado; corolacampanulada, infundibuliforme, el limbo más o menos entero, los lobos 5-10,dilatándose gradualmente o abruptamente, blanca, amarilla o rosado-púrpura,glabra; estambres 5, incluidos, insertos en la base del tubo de la corola,rectos, glabros o pubescentes con pelos glandulares, las anterascontorto-helicoidales, polen colpado a agrecolpado; estilo 1, blanco, glabro,estigma capitado, escasamente 2-lobado. Frutos en cápsulas, globosas, más omenos cónicas, redondeadas, pardas, pajizas, grises o translúcidas al secarse,enteras o 4lobadas, con 2-4 lóculos, las valvas generalmente 4, dehiscenciavalvar o irregular, lisas, glabras; semillas 1-4, pardas, negras (pajizas en M. aegyptia), redondeadas, angulosas, 0-3 ángulos,lisas, glabras, puberulentas o tomentosas. Aprox. 80 spp. Principalmente en lostrópicos.

    Bibliografía:Austin, D.F. Florida Sci. 42: 216-222 (1979); Econ. Bot.49: 330-332 (1995). Gunn,C.R. Econ. Bot.31: 237-252 (1977). O’Donell,C.A. Lilloa6: 467-554 (1941).

  • Provided by: [I].Flora Mesoamericana
    • Source: [
    • 9
    • 1
    • ]. 

    MERREMIA Dennst. ex Endl.

    Trepadoras o lianas, raramente hierbas; tallos generalmente herbáceos, algunos leñosos, glabros o pubescentes. Hojas enteras, lobadas o palmaticompuestas, 3–7-folioladas, glabras o pubescentes. Flores solitarias o inflorescencias dicasiales a subumbeladas, axilares; sépalos subiguales, oblongos a elípticos, glabros o pubescentes; corola campanulada a infundibuliforme, blanca, amarilla o purpúrea; filamentos iguales o subiguales, anteras helicoidales con dehiscencia completa, polen 3–9-colpado, raramente agrecolpado (M. umbellata); ovario generalmente glabro, 2–3-carpelar, 4–6-ovulado, estilo filiforme, estigma globoso. Frutos capsulares, 2–4-loculares, dehiscencia longitudinal mediante 4–6 valvas o irregular, pericarpio delgado y frágil; semillas 1–4 (–6), glabras o puberulentas.

    Género con 60–80 especies distribuidas en las regiones subtropicales y tropicales; 9 especies en Nicaragua.

  • Provided by: [E].Flora de Nicaragua
    • Source: [
    • 10
    • ]. 

    Vines or lianas; usually herbaceous, some lignescent, small or large. Leaves entire, lobed, or palmately compound with 3-7 leaflets, glabrous or pubescent. Flowers solitary and axillary, in few-flowered dichasia or sub-umbellate, the bracts linear or lanceolate; sepals subequal, oblong to elliptical; corolla cam- panulate, large or small, white, yellow or purple; the filaments equal or subequal, mostly glabrous at the base, the anthers spirally twisted with complete de- hiscence, the pollen 3-colpate or rarely pantocolpate; ovary usually glabrous, 2-3 carpellate, 4-6 ovulate, the style filiform, the stigma globose or biglobose, included. Fruits capsular, 2-4-celled, longitudinally dehiscent by 4-6 valves or irregularly, the pericarp thin and fragile; the seeds 4-6, glabrous or pubescent.

  • Provided by: [D].Flora de Panama
  • Bejucos o lianas. Hojas simples o (más común) palmadamente compuestas, ovadas a ± orbiculares, cordadas en la base, acuminadas en el ápice y a menudo mucronatas, no lobuladas o lobuladas (cuando simples), de otra forma enteras a dentadas o sinuado-lobuladas, pubescentes en ambas caras con tricomas simples a glabrescentes. Infls. cimosas (a veces umbeliformes) o de 1 fl. solitaria; pedúnculo cilíndrico. Fls. con los sépalos separados, ± iguales, lanceolados, obtusos a acuminados y (a veces) mucronatos en el ápice, glabros o pubescentes; corola principalmente amarilla o blanca, campanulada, levemente lobulada, glabra o glabrada; estambres incluidos; anteras espiraladamente torcidas; estilo 1, simple; estigmas 2, ± globosos. Frs. capsulares, 4–6-valvados o irregularmente dehiscentes; semillas (1)4–6, café oscuro a negras, glabras a puberulentas.

  • Provided by: [F].Manual de Plantas de Costa Rica
  • Morphology

    Only the following species of Ipomoea have yellow flowers :— I. tuberculata, alpina, obscura, and ochracea.

  • Provided by: [G].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Capsule 4-valved or dehiscing irregularly, 1–4-locular

  • Provided by: [G].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Ovary 2–4-locular, 4-ovuled; style simple, filiform; stigma biglobular

  • Provided by: [G].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Stamens included; pollen smooth

  • Provided by: [G].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Corolla funnel-shaped or campanulate, entire or slightly lobed, rarely deeply lobed, white or usually yellow* with various centres

  • Provided by: [G].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Sepals usually subequal, save in a very few species, elliptic to orbicular, obtuse or acute, sometimes accrescent

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

    Flowers solitary or in few- to many-flowered axillary inflorescences, small to rather large

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

    Herbs or shrubs, usually twiners but often prostrate, rarely erect

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

    Corolla funnel-shaped or campanulate, entire or slightly lobed, rarely deeply lobed, mostly with distinct midpetaline areas, white or yellow with various centres, often darker brownish or purplish centre.

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

    Sepals 5, usually subequal, elliptic to lanceolate, ovate or oblong, acute or obtuse, sometimes accrescent.

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

    Stamens often contorted; filaments filiform, often broadened at the base, often unequal; pollen smooth.

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

    Herbs or small shrubs, usually twiners, often prostrate, rarely erect.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 7
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    Stems terete, more rarely winged.

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

    Leaves usually petiolate, variable in shape and size, entire, dentate, auricled, lobed or palmately or pedately partite to compound.

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

    Flowers axillary, solitary or in few- to many-flowered axillary inflorescences, small to rather large, usually cymose.

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

    Bracts usually small.

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

    Capsule 4-valved or dehiscing irregularly, 1–4-locular.

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

    Seeds 4, or less by abortion, glabrous or pubescent.

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

    Ovary 2–4-locular, 4-ovuled; style simple, filifrom, included; stigma biglobose.

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

    Disk often annular.

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

    Habit

    Vines or lianas

  • Provided by: [D].Flora de Panama
  • Included Species

      Bibliography

     Information From

    Convolvulaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • B 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
    • C
    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
    • D 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
    • E Missouri Botanical Garden
    Manual de Plantas de Costa Rica
    http://www.tropicos.org/Project/Costa%20Rica
    Hammel, B. E.; Grayum, M. H.; Herrera, C.; Zamora, N. Manual de Plantas de Costa Rica. Missouri Botanical Garden Press, 2003-2014
    • F 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
    • G
    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.
    • H Missouri Botanical Garden
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • I Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • J CC0 1.0 Universal (CC0 1.0).