Ixora L.
  • Sp. Pl. 1: 110. 1753. (1 May 1753)


Cite taxon page as 'WFO (2021): Ixora L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000019411. Accessed on: 26 Sep 2021'

General Information

Shrubs or small trees or occasionally perhaps climbing (Ixora hekouensis), unarmed. Raphides absent. Leaves opposite or rarely ternate, decussate, without domatia; petioles articulate at base; stipules persistent to caducous, interpetiolar or shortly united around stem, triangular, acute to usually aristate. Inflorescences terminal on principal stems [or sometimes terminal on reduced lateral stems and appearing axillary], cymose to corymbiform or paniculiform, few to many flowered, sessile to pedunculate, bracteate or bracts reduced; axes often articulate; bracteoles when present often fused in pairs. Flowers pedicellate or sessile, bisexual, monomorphic, often fragrant. Calyx limb truncate or 4-lobed. Corolla yellow, orange, red, or white, sometimes becoming reddened when dry, salverform with tube slender, inside glabrous or pubescent at throat; lobes 4 [rarely to 9], convolute in bud. Stamens 4, inserted at corolla throat, partially to fully exserted; filaments short or reduced; anthers dorsifixed near base. Ovary 2-celled, ovules 1 in each cell, pendulous from axile placentas attached in upper part of septum; style in upper portion fusiform or clavate; stigmas 2, linear, recurved, exserted. Fruit black or red, drupaceous, leathery or fleshy, subglobose to ellipsoid or ovoid, with calyx limb persistent; pyrenes 2, 1-celled, each with 1 seed, plano-convex or concavo-concave, smooth dorsally (i.e., abaxially), leathery, papery, or crustaceous; seeds medium-sized, ellipsoid to oblanceolate, grooved and concave ventrally (i.e., adaxially); testa membranous; endosperm cartilaginous; radicle terete, hypogeous.

  • Provided by: [F].Flora Of CHina @ efloras.org
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    63. Ixora L.

    Por C.M. Taylor.

    Arbolitos oarbustos terrestres, inermes, las flores bisexuales. Hojas opuestas(Mesoamérica) o a veces ternadas, isofilas, enteras, sin domacios; nervadurassecundarias frecuentemente poco diferenciadas de la nervadura terciaria, lanervadura menor no lineolada; estípulas interpeciolares y a veces parcialmenteintrapeciolares, triangulares, frecuentementearistadas, erguidas, persistentes o caducas, aparentemente imbricadas.Inflorescencias terminales a veces sobre ramitas cortas y con aparienciaaxilar, cimosas a tirsoides, multifloras, con brácteas, frecuentemente algunasestípulas sin hojas subyacentes a la base del pedúnculo. Flores sésiles opediceladas, homostilas, protandras, frecuentemente fragantes; limbo calicino4-lobado, sin calicofilos; corola hipocraterimorfa, blanca, roja o amarilla,los lobos 4, convolutos, sin apéndices; estambres 4, exertos, las anterasdorsifijas en el 1/2 basal; estigmas 2, lineares, exertos; ovario 2-locular,los óvulos solitarios en cada lóculo, axilares. Frutos en drupas, subglobosas aelipsoidales, suculentas o coriáceas, rojas o negras; pirenos 2, 1-loculares,aplanado-convexos; semillas hemisféricas. 400 spp. Pantropical.

    Las bases de lasláminas foliares y los ejes de las inflorescencias tienen articulaciones, dandoa las muestras una apariencia característica; este carácter distingue Ixora de otros géneros en África, pero se haestudiado dentro de las rubiáceas neotropicales. Varias especies de Ixora se cultivan como ornamentales, véase ladiscusión de Ixoracoccinea.

    Bibliografía:Taylor, C.M. Novon 13: 216-219 (2003).

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    IXORA L.

    Arbustos o árboles; plantas hermafroditas. Hojas opuestas, sin domacios; estípulas interpeciolares y a veces además parcialmente intrapeciolares, triangulares, frecuentemente aristadas, persistentes o caducas. Inflorescencias generalmente terminales, tirsoides a cimoso-corimbiformes, bracteadas, flores homostilas; limbo calicino 4-lobado; corola hipocrateriforme, blanca o coloreada, lobos 4, convolutos; ovario 2-locular, óvulo 1 por lóculo. Fruto drupáceo, globoso a elipsoide, suculento, rojo a negro; pirenos 2, 1-loculares, plano-convexos.

    Género pantropical con unas 400 especies, la mayoría en Asia y Africa; 2 especies nativas y 3 cultivadas se encuentran en Nicaragua. Las especies cultivadas raras veces producen frutos.

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    Trees or shrubs. Leaves occasionally ternate, usually thick; petioles occa- sionally wanting; stipules free, usually acuminate. Inflorescences terminal or ax- illary, corymbose, the pedicels of the flowers bracteolate. Flowers variously col- ored, the hypanthium ovoid, the calycine cup 4(-5)-lobed; corolla salverform, slender, the lobes 4-5, contorted; stamens 4(-5), the anthers linear, dorsifixed, exserted; ovarian disc swollen, the style slender, the stigmas 2, exserted, the ovary 2-celled, the ovules solitary, peltately attached to the middle of the septum. Fruits baccate, leathery or fleshy; seeds concave convex, the testa membranous.

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    Morphology

    Ovary small, 2-locular; placentas fleshy attached near the top of the septum; ovules solitary, immersed in the placentas; style slender, equalling or slighdy exceeding the corolla-tube, glabrous or sometimes pilose; stigma exserted, 2-lobed; lobes always completely separate when mature, usually recurved, equalling or a little shorter than the anthers

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    Fruit a drupe, usually red (dull brown in dry specimens), spherical or 2-lobed, slightly fleshy or coriaceous, containing 1–2, 1-seeded thin-walled pyrenes; calyx-limb persistent

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    Seeds frequently undeveloped, rusty brown in colour, 2, hemispherical with a deep circular excavation in the centre of the plane ventral face, convex dorsal face not sculptured but sometimes with minute protuberances which are occasionally shiny; endosperm entire cartilaginous; embryo dorsal, curved; cotyledons foliaceous; radicle pointing downwards.

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    Corolla white, yellow, pink or red, glabrous outside or rarely pilose; tube cylindrical, usually slender, only slightly widened at the throat, naked or somewhat bearded at throat; lobes contorted in bud, spreading or reflexing, lanceolate, narrowly elliptic or ovate, much shorter than or occasionally equalling the tube in length

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    Stamens attached at the mouth of the tube, exserted and spreading or erect in mature flowers; filaments very short; anthers attached near the base, linear, apiculate and sagittate, twisted when dehisced

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    Disc annular, fleshy

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    Leaves opposite or rarely ternate, sessile or petiolate; blades usually drying greyish, greenish, brown or rarely black (not in Africa), chartaceous to coriaceous, entirely glabrous, less often pubescent beneath, very rarely puberulous above; domatia and bacterial nodules absent; stipules with a truncate to triangular limb, usually connate for most of the length, bearing a short or long cuspidate or aristate lobe, rarely pubescent inside

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    Shrubs or small trees

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    Calyx often reddish in colour, glabrous to shortly pilose or less often pubescent; tube ovoid; limb short, sometimes almost absent, usually as wide as the tube, truncate or more usually 4(–5)-toothed, shortly lobed or occasionally with well-developed lobes

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    Flowers usually fragrant, hermaphrodite, 4(–5)-merous, few–many, usually borne in triads on terminal sessile to long-pedunculate ± lax cymes or rarely spherical heads, occasionally terminal on very short branches so that they appear axillary (not in Africa) or rarely cauliflorous (not in Africa); inflorescence-branches frequently coloured, opposite and articulate or less often absent; pedicels present or absent; inflorescence-supporting leaves (or rudimentary leaves fide Bremekamp l.c.) often present at base of peduncle, usually smaller and frequently differing in shape from the foliage leaves, but with a fully developed stipule; bracts stipule-like; bracteoles present or rarely absent

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Calyx tube ovoid; limb short, truncate or more usually 4(5)-toothed, shortly lobed or occasionally with well developed lobes.

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    Stipule limb truncate to triangular, usually connate for most of the length, bearing a short or long cuspidate or aristate lobe, rarely pubescent inside.

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    Flowers usually fragrant, hermaphrodite, 4(5)-merous, few to many in terminal sessile to long-pedunculate ± lax corymbs or rarely spherical heads; inflorescence branches frequently coloured, pedicels present or absent*; inflorescence-subtending leaves usually smaller and frequently differing in shape from the foliage leaves, but with a fully developed stipule; bracts stipule-like; bracteoles present or rarely absent.

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    Shrubs or small trees.

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    Leaves opposite or rarely ternate, subsessile or petiolate or rarely sessile; mostly entirely glabrous; domatia and bacterial nodules absent (a bacterium causes a leaf spot in some species); petioles articulate (i.e. a joint between stem and petiole is apparent).

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    Corolla white, yellow, pink or red, glabrous outside or rarely pilose; tube cylindrical, usually slender, only slightly widened at the throat, naked or somewhat bearded at throat; lobes contorted to the right in bud, spreading or reflexing, linear to ovate, much shorter than or occasionally equalling the tube in length.

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    Stamens attached at the mouth of the tube; anthers twisted when dehisced.

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    Ovary small, 2-locular (rarely 4-locular outside Africa); placentas fleshy, attached to the top of the septum; ovules solitary, immersed in the placentas; style slender, equalling or slightly exceeding the corolla tube, glabrous or sometimes pilose; pollen presenter exserted, 2-lobed; mature lobes always completely separate, usually recurved, equalling or a little shorter than the anthers.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Drupes spherical or 2-lobed, slightly fleshy or coriaceous, containing 1 or 2 pyrenes; pyrenes thin walled, 1-seeded; calyx limb persistent.

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    Seeds 2, hemispherical, with a deep circular excavation on plane face, convex face sometimes with minute occasionally shiny protuberances.

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    Habit

    Trees or shrubs

  • Provided by: [E].Flora de Panama
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    Distribution

    Ixora, a genus of about 400 species, is widely distributed throughout the trop- ics of the world.

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

     Information From

    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • A 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
    • B
    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 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
    • D 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
    • E 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.
    • F 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
    • G Missouri Botanical Garden
    Rubiaceae
    • 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).