Dipterocarpaceae Blume
  • Bijdr. Fl. Ned. Ind. 222. 1825. (20 Sep--7 Dec 1825)


Cite taxon page as 'WFO (2020): Dipterocarpaceae Blume. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-7000000197. Accessed on: 13 Jul 2020'

General Information

Trees, evergreen or semievergreen, rarely deciduous in dry season. Xylem with aromatic resin in intercellular resin canals. Branchlets with stipular scars, sometimes annular. Leaves simple, alternate; stipules persistent or caducous, large or small; leaf blade with lateral veins pinnate, margin entire or sinuate-crenate. Inflorescences few- or many-flowered, terminal or axillary racemes or panicles; flowers usually sweetly scented; bracts usually fugacious and minute, rarely persistent and large. Inflorescences, calyces, petals, ovary, and other parts usually with stellate, squamate, fascicled or free-standing hairs. Flowers bisexual, actinomorphic, contorted. Calyx lobes 5, free or united at base, imbricate in bud if not united. Petals 5, adnate or connate at base. Stamens (10-)15 to many, free from or connate to petals; filaments usually dilated at base; anthers 2-celled, with 2 pollen sacs per cell (Chinese species); connective appendages aristate, filiform or stout. Ovary superior, rarely semi-inferior, slightly immersed in torus, usually 3-loculed, each locule 2-, rarely many ovuled; ovules pendulous, lateral or anatropous. Fruit usually nutlike, sometimes capsular and 3-valved, 1(to many)-seeded, with persistent, variously accrescent calyx of which 2 or more lobes are usually developed into lorate wings. Seed exalbuminous; cotyledons fleshy, equal or unequal, applanate or ± folded or cerebriform, entire or laciniate; radicle directed toward hilum, usually included between cotyledons.

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

    Seeds without endosperm; cotyledons thick and equal or variously contorted

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    Fruit free from or included in the enlarged calyx-tube, rarely closely adnate to it, indehiscent, usually 1-seeded

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    Ovary inserted on the broad torus or slightly immersed in it, 3-celled; style subulate or variously thickened, entire or 3-lobed; ovules 2 in each cell

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    Stamens rarely definite, hypogynous or subperigynous; filaments short, often dilated at the base; anthers 2-celled, opening lengthwise; connective mucronate or aristate or club-shaped

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    Petals 5, much contorted, free or slightly connate at the base, often hairy and inconspicuous

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    Trees with resinous wood

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    Leaves alternate, entire, penninerved; indumentum often of two kinds, of stellate hairs or rarely of peltáte scales; stipules mostly small and deciduous, sometimes very large and enclosing the young bud, rarely persistent, leaving an annular scar after falling away

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    Flowers hermaphrodite, actinomorphic, fragrant, in axillary panicles

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    Calyx-tube short or well developed, free or adnate to the ovary; lobes 5, imbricate or valvate, mostly greatly enlarged, wing-like, and ascending in fruit and then strongly nervose, rarely small and reflexed or spreading

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    Small to large usually resinous mostly buttressed trees; indumentum various but often of fasciculate hairs, frequently glandular

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    Stamens 5 to over 100; filaments free or connate; anthers 2-thecous, introrse or laterally dehiscent

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    Ovary superior or semi-inferior, partly unilocular or (2–)3–5-locular (4 in the sole S. American genus); ovules 2(–4) in each locule, axile or parietal

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    Fruit indehiscent, usually 1-seeded with woody pericarp, usually with 2–5 persistent wing-like sepals but not accrescent in a few genera

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    Leaves alternate, simple, entire or sinuate at margin; stipules paired, large or small, persistent or soon falling

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    Flowers ?, regular, in axillary or terminal branched panicles, racemose or less often cymose; bracts and bracteoles paired, persistent or soon falling

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    Calyx persistent; lobes imbricate or valvate, free or fused at the base; 2–5 lobes usually accrescent into very distinct wings in fruiting state

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    Corolla-lobes 5, contorted, connate at base or free

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    Fruit 1-seeded, indehiscent, surrounded by the wings (always 5 in the African species) of the accrescent calyx

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    Flowers actinomorphic, bisexual

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    Leaves alternate, petiolate, entire, penninerved, in African species always with an extra-floral nectary at the base of the midrib on the upper face of the lamina; stipules caducous

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    Trees or shrubs

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    Ovary superior, (1) 3-locular with axile or parietal placentation; carpels (1) 3, 2-ovulate

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    Stamens 5, 10, 15 or numerous (always numerous in African species)

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    Petals 5, contorted to the right, free or slightly connate at the base

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    Sepals 5, accrescent

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     Information From

    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
    • A
    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.
    • B Missouri Botanical Garden
    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
    • C The Trustees of the Royal Botanic Gardens, Kew
    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
    • D
    Dipterocarpaceae
    World Flora Online Data. 2017.
    • E CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).