Epilobium L.
  • Sp. Pl. 1: 347. 1753. (1 May 1753)


Cite taxon page as 'WFO (2021): Epilobium L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000013609. Accessed on: 21 Sep 2021'

General Information

Herbs perennial [or annual, sometimes suffrutescent], with leafy rosettes, stolons, soboles (shoots), or turions (subterranean globose buds with fleshy scales). Stems glabrous to pubescent, often with lines of hairs decurrent from margins of petioles. Leaves opposite, becoming alternate and bractlike in inflorescence; petiolate or sessile; stipules absent; bracteoles absent. Inflorescences simple or branched racemes, panicles, spikes, or corymbs. Flowers 4-merous, often protandrous, with floral tube, producing nectar at base of style. Petals pink to rose-purple or white [or rarely cream-colored or orange-red], obcordate or obtrullate, notched at apex. Stamens 8, in two unequal whorls; pollen yellow, shed in tetrads. Style erect; stigma entire or 4-lobed. Fruit an elongate, slender capsule, 4-loculed, loculidical. Seeds many [or rarely only 4], generally with terminal coma of silky hairs [or coma rarely lacking]. 2n = [18, 20, 24, 26, 28, 30, 32,] 36, [38, 60].

  • Provided by: [C].Flora Of CHina @ efloras.org
    • Source: [
    • 6
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    7. Epilobium L.

    Por P.C. Hoch.

    Hierbas perennes o anuales, algunas veces subarbustos (no en Mesoamérica), perennizantes por medio de rosetas foliosas, estolones, yemas carnosas o raíces laterales patentes (no en Mesoamérica). Tallos erectos, ascendentes o decumbentes, pelosos, algunas veces con tricomas glandulares, a glabros, frecuentemente con hileras alzadas de tricomas decurrentes desde los márgenes de los pecíolos. Hojas caulinares, generalmente opuestas proximalmente a alternas en las inflorescencias, subenteras a denticuladas, sésiles a pecioladas; estípulas ausentes. Inflorescencias en racimos laxos o panículas; brácteas florales subsésiles, angostamente lanceoladas a lineares. Flores 4-meras, múltiples, generalmente actinomorfas (Mesoamérica), en pedicelos delgados (Mesoamérica) o subsésiles; tubo floral presente, cortamente infundibuliforme, verdoso; sépalos 4, angostamente lanceolados, erectos; pétalos 4, en su mayoría sobrepasando a los sépalos, purpúreo-rosados o blancos (Mesoamérica, en los demás lugares rara vez anaranjado-rojos o color crema), apicalmente emarginados; estambres 8 en dos grupos desiguales, las anteras amarillentas; polen amarillo, liberado en tétradas; estilo blanquecino, subigual a más largo que los estambres; estigma entero, claviforme a capitado (Mesoamérica) a 4-lobado; perianto caduco 2-5 días después de la antesis. Fruto en cápsula, alargada, delgada, 4-locular, subterete, prontamente dehiscente; semillas numerosas, generalmente en 1 hilera por lóculo, en su mayoría angostamente obovoide, cada uno con una coma (ausente en algunos taxa afuera de Mesoamérica). 2 n =18, 20, 24, 26, 30, 32, 36, 38, 60; todos los de Mesoamérica tienen 2 n =36. Aprox. 165 spp. Cosmopolita, pero sobre todo en regiones templadas, sólo en montañas altas en las áreas tropicales.

    Este es el género más grande de la familia con aproximadamente 165 especies. La mayoría de las especies, y todas en Mesoamérica, están ubicadas en la sección Epilobium.

    Bibliografía: Hoch, P.C. y Raven, P.H. Phytologia 73: 456-459 (1992). Munz, P.A. N. Amer. Fl. ser. 2, 5: 198-231 (1965). Raven, P.H. Ann. Missouri Bot. Gard. 63: 326-340 (1976). Solomon, J.C. Ann. Missouri Bot. Gard. 69: 239-335 (1982).

  • Provided by: [E].Flora Mesoamericana
    • Source: [
    • 7
    • ]. 

    "Fls 4-merous; hypanthium usually prolonged a little beyond the summit of the elongate, slender ovary and simulating a cal-tube; sep ovate to lanceolate, deciduous from the fr; pet white to pink or purple; stamens 8, often unequal; style short; stigma clavate, ovoid, or 4-cleft; capsule linear, elongate, 4-valved; seeds numerous, small, bearing a terminal coma of hairs; annual or usually perennial herbs, rarely subshrubs, with alternate or opposite, linear to ovate lvs; fls many to few in elongate or short terminal racemes, or even solitary. 200, N. and S. Temp. and Arctic."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 8
    • ]. 

    Morphology

    Stamens 8; anthers versatile.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Petals 4, rose-purple or white (yellow in 1 N. American species), emarginate.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
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    Sepals 4, not persistent.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
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    Floral tube present (in F.Z. area) or nil.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Bracteoles lacking.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Stipules absent.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Flowers in a terminal inflorescence (in F.Z. area) or borne in the axils of the leaves.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Perennial herbs, often flowering the first year, rarely annual.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Leaves opposite, usually alternate above, toothed or entire.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Stigma clavate, globose, or deeply 4-lobed.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Pollen shed in tetrads, singly in a few non-African species.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Dehiscence of capsule loculicidal.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Ovary 4-locular; ovules pluriseriate in each locule, the seeds free.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Seeds with a prominent tuft of hairs, the coma.

  • Provided by: [G].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Plantes'herbacées ou suffrutescentes; tiges simples ou ramifiées.'Feuilles'alternes, opposées, rarement verticillées, entières ou dentées; stipules absentes.'Inflorescences'1-flores, au sommet des rameaux.'Fleurs'régulières, généralement roses, mauves ou rouges, rarement blanches ou blanc crème; tube du calice non ou à peine prolongé au-dessus de l'ovaire; sépales 4, caducs après la floraison; pétales 4, obovales ou cordiformes, tordus dans le bouton; étamines 8, les 4 épipétales plus courtes; ovaire 4-loculaire; style grêle; stigmate capité, clavé, oblong ou ellipsoïde, entier ou profondément 4-lobé; ovules nombreux, unisériés dans chaque loge.'Capsules'linéaires, à déhiscence loculicide en 4 valves s'enroulant après la déhiscence.'Graines obovoïdes ou fusiformes, munies au sommet d'une aigrette de poils soyeux-blanchâtres.\n\t\t\t\tGenre renfermant près de 200 espèces qui se rencontrent principalement dans les régions tempérées et froides, plus rarement dans les régions tropicales d'altitude; pour la Flore, 3 espèces localisées dans les régions orientales.

  • Provided by: [D].Flore d'Afrique Centrale
    • Source: [
    • 9
    • ]. 

    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
    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.
    • B 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.
    • C Missouri Botanical Garden
    Flore d'Afrique Centrale
    https://www.floredafriquecentrale.be
    • D http://creativecommons.org/licenses/by/4.0/ Attribution 4.0 International (CC BY 4.0)
    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
    • E Missouri Botanical Garden
    Onagraceae
    World Flora Online Data. 2017.
    • F CC0 1.0 Universal (CC0 1.0).
    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
    • G
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).