Lythraceae J.St.-Hil.
  • Expos. Fam. Nat. 2: 175. 1805. (Feb-Apr 1805)


Cite taxon page as 'WFO (2021): Lythraceae J.St.-Hil. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-7000000356. Accessed on: 16 Oct 2021'

General Information

Herbs, shrubs, or trees; young stems often quadrangular. Leaves opposite, often decussate, or whorled, rarely subalternate to alternate, simple, entire; pinnately veined, secondary veins typically joined in a series of intramarginal arches; stipules vestigial or absent. Inflorescences racemes, cymes, or panicles; flowers axillary or terminal, usually 4-, 6- or 8-merous, sometimes 3- or 5-merous, bisexual, regular or irregular. Floral tube perigynous, hemi-epigynous, or epigynous, persistent in fruit, membranous to leathery, often 6-12-ribbed; sepals valvate, equal to much shorter than floral tube, membranous to thickly leathery, persistent; epicalyx alternating with sepals or absent. Petals inserted at rim of floral tube, alternating with sepals, crinkled, clawed or not, frequently caducous, rarely absent. Stamens usually biseriate and 2 × as many as sepals, sometimes uniseriate, inserted near base of floral tube or higher, or numerous, multiseriate, with at least some inserted at floral rim just below sepals (Punica, Sonneratia, and some Duabanga); anthers versatile [rarely basifixed]. Ovary superior, half-inferior, or inferior, 2-6- or multi-loculed, with many ovules per locule; style simple; stigma capitate, conic-peltate, or punctiform; placentation axile, sometimes free central at fruit maturity. Fruit partly or completely surrounded by persistent floral tube, loculicidally dehiscent or irregularly dehiscent capsules, infrequently indehiscent, leathery, or berrylike. Seeds usually numerous, without endosperm; embryo straight, cotyledons flat or convolute.

  • Provided by: [D].Flora Of CHina @ efloras.org
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    Morphology

    Flowers usually actinomorphic, hermaphrodite, solitary to paniculate

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    Herbs, shrubs or trees; leaves opposite or verticillate, rarely alternate; stipules absent or very small

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    Stamens usually 4 or 8, or rarely more, inserted below the petals; filaments usually inflexed in bud; anthers 2-celled, opening lengthwise

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    Petals present or absent, inserted towards the top of the calyx-tube, crumpled in the bud

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    Fruit usually capsular, opening by a transverse slit, by valves, or irregularly

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    Ovary superior, sessile or shortly stipitate, completely or incompletely 2–6-celled (rarely 1-celled); style simple, variable in length; ovules numerous, on an axile placenta sometimes not extending to the top of the ovary

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    Seeds numerous, without endosperm; embryo straight

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    Sepals united into a tube, valvate, sometimes with appendages between the lobes

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    Annual or perennial (sometimes marshy or aquatic) herbs, suffrutices, shrublets, shrubs or trees

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    Petals inserted in the calyx-tube, as many as and alternating with the calyx-lobes, sometimes few or 0, often clawed, membranous, corrugated and imbricate in the bud, equal or sometimes unequal

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    Stamens numerous (32–200) in the primitive woody genera, often as many as the calyx-lobes, sometimes fewer (2 or 1) in the more advanced herbaceous ones, equal or sometimes very unequal (in heterostylous plants), inserted on the calyx-tube; filaments free; anthers 2-locular, bent inwards in the bud, dorsifixed and versatile, rarely basifixed (Pleurophora and Crimea, not from FZ area), dehiscing by longitudinal slits

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    Leaves simple, entire, 1-nerved or ± distinctly penninerved, decussate, sometimes verticillate, rarely alternate; stipules 0 or 2–10 or more, small, subulate, axillary

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    Flowers bisexual, actinomorphic or very rarely zygo-morphic, (3)4–5(6–16)-merous, homomorphic or often di-trimorphic

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    Inflorescence various from single axillary flowers to fasciculate, cymose or paniculate; pedicels usually bracteolate

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    Calyx persistent, tubular, urceolate or campanulate, the lobes alternating often with ± developed appendages in the sinuses

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    Disk absent or very small, cupular or unilateral

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    Seeds 2-numerous, various in form, small, sometimes winged; embryo straight, with endosperm; cotyledons flat or rarely convolute

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    Fruit mostly a capsule included in the calyx-tube or ± exserted, indehiscent or opening loculicidally or septicidally by valves or by a transverse lid or irregularly, with the placentas forming a central column

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    Ovary usually free, sessile or stipitate, 2–6-locular or 1-locular (Cryptotheca); placentation axile, rarely basal, sometimes the central axis not reaching to the top of the ovary; style absent, short or elongate and flexuous; stigma capitate or punctiform, rarely 2-lobed; ovules numerous to 2, small, anatropous, ascending

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    Ovary superior (except Punica), sessile or shortly stipitate, completely or incompletely 2–6-locular, rarely unilocular or multilocular (>i>Punica); style simple, sometimes of different lengths in different forms of flower; stigma often ± capitate; ovules 2–numerous on axile placentas sometimes not reaching apex of ovary (parietal in one >i>Ammannia)

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    Fruit capsular or baccate, opening by a transverse slit or valves or bursting irregularly or ± indehiscent

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    Seeds numerous, without endosperm

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    Annual or perennial herbs, subshrubs, shrubs or trees

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    Leaves simple, opposite or verticillate, rarely alternate; stipules absent or minute

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    Petals free, inserted towards the top of the calyx-tube, alternating with the sepals, folded in bud, or absent

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    Stamens usually 4 or 8, less often many (10–200) or fewer (1–2), inserted below the petals; filaments sometimes of different lengths in the different forms of flower, usually inflexed in bud; anthers 2-thecous, opening lengthwise

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    Flowers regular or slightly irregular, hermaphrodite, (3–)4, 6, 8(–16)-merous, solitary to paniculate, sometimes di- or tri-morphic

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    Sepals united into a tube (hypanthium), lobes valvate, often with small appendages between

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    Herbes'annuelles ou vivaces souvent aquatiques ou palustres, suffrutex, arbustes ou arbres.'Feuilles'généralement décussées, plus rarement verticillées ou spiralées, généralement entières; stipules 0 ou 2 à plus, petites.'Inflorescences'en ombelles, glomérules, racèmes, épis, cymes ou panicules, ou fleurs solitaires.'Fleurs'souvent bibractéolées, actinomorphes, rarement zygomorphes, ☿ ou ♂♀ par réduction, homéomorphes, 2- ou 3-morphes, (3)4-6(16)-mères; réceptacle campanulé à tubuleux; calice tronqué ou à sépales valvaires; appendices alternisépales souvent présents et parfois grands; pétales insérés entre les sépales, chiffonnés dans le bouton ou très petits et plans, rarement absents; étamines 1-∞, plus souvent 4-8, en 1-2 ou ∞ verticilles, diversement insérées sur le réceptacle, égales ou inégales; anthères à 2 loges, à déhiscence longitudinale; ovaire supère à semi-infère, libre, parfois stipité, entièrement ou au sommet incomplètement (1)2-6-loculaire; placentation axile; disque parfois présent; style simple, parfois absent; stigmate petit, capité ou ponctiforme, rarement bilobé; ovules ∞, parfois 2, anatropes, ascendants.'Fruits'secs indéhiscents ou capsules (1)2-6-loculaires.'Graines (1)2-∞, exalbuminées; embryon droit; cotylédons plans, plus rarement convolutés, souvent auriculés-cordés.\n\t\t\tFamille des régions tempérées, subtropicales et tropicales, comptant 22 genres et ± 500 espèces; pour la Flore, 5 genres et 28 espèces dont 1 représentée par 2 sous-espèces.\n\t\t\t\n\t\t\t\t Lagerstroemia speciosa'(L.) Pers. et'L. indica L., à très belles fleurs, ont été introduits.

  • Provided by: [E].Flore d'Afrique Centrale
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     Information From

    Plants Of the World Online Portal - FWTA
    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
    • A The Trustees of the Royal Botanic Gardens, Kew
    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
    • B
    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
    • C
    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.
    • D Missouri Botanical Garden
    Flore d'Afrique Centrale
    https://www.floredafriquecentrale.be
    • E http://creativecommons.org/licenses/by/4.0/ Attribution 4.0 International (CC BY 4.0)
    Lythraceae
    World Flora Online Data. 2017.
    • F CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • G CC0 1.0 Universal (CC0 1.0).