Orobanchaceae Vent.
  • Tabl. Regn. Veg. 2: 292. 1799. (5 May 1799)


Cite taxon page as 'WFO (2020): Orobanchaceae Vent. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-7000000430. Accessed on: 23 Feb 2020'

General Information

Herbs annual, biennial, or perennial parasites, without chlorophyll. Stems unbranched or sometimes branched. Leaves scalelike, spirally or subimbricately arranged. Inflorescences racemose, spicate, or subcapitate, rarely 1-flowered; bract 1, usually similar to leaves; bractlets 2, adnate to base of calyx or pedicel. Flowers bisexual, subsessile or pedicelled. Calyx tubular, cupular, or campanulate, (3 or)4-6-lobed, 2-6-parted, 6-toothed, or spathelike, sometimes absent or of 3 free sepals. Corolla bilabiate, usually curved, sometimes tubular-campanulate or funnelform with 5 subequal lobes; upper lip entire, emarginate, or 2-lobed; lower lip 3-lobed. Stamens 4, didynamous, inserted at base of corolla tube; filaments slender; anthers 2-celled, dehiscing longitudinally, sometimes 1 cell fertile and another sterile or reduced to spur. Pistil 2- or 3-carpellate; ovary superior; placentas 2-4 or 6(-10), parietal or sometimes axile at ovary base; ovules 2-4 or numerous, anatropous. Style long; stigma inflated, discoid, peltate, or 2-4-lobed. Capsule usually dehiscing loculicidally by 2 or 3(or 4) valves. Seeds minute, testa pitted or reticulate.

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

    Corolla gamopetalous, often curved; limb oblique or 2-lipped, lobes 5, imbricate, the adaxial 2 interior

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    Stamens 4, didynamous, inserted below the middle of the corolla-tube, alternate with the lobes, the fifth (adaxial) one reduced to a staminode or absent; anthers often connivent in pairs, opening lengthwise

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    Ovary superior, 1-celled, with 4 parietal placentas; style terminal; ovules numerous

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    Capsule often enveloped by the calyx, opening by 2 valves

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    Seeds very numerous, small, with fleshy endosperm and minute embryo

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    Calyx 4-5-toothed or lobed or variously split, lobes open or valvate

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    Flowers solitary in the axils of bracts, often crowded, hermaphrodite, zygomorphic

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    Herbs, parasitic on roots, often covered with scales at the base, never green; stems with alternate, often crowded, scales

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    Stamens didynamous, inserted at or below the middle of the corolla tube; filaments filiform, glabrous to glandular hairy; anther cells in pairs, attached to the filament dorsally, longitudinally dehiscent, glabrous to densely lanate

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    Corolla hypogynous, gamopetalous, tubular, limbate, sometimes funnel-shaped above, curved throughout or in part

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    Calyx hypogynous, persistent, tubular (long-sided) or campanulate (short-sided), sessile or stalked, 2–5-lobed or -toothed, gamosepalous or split dorsally and ventrally into two free sections

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    Flowers hermaphrodite, zygomorphic, subtended by scale-like bracts with or without bracteoles

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    Capsule usually bivalved, ovoid-ellipsoid or ovoid-spheroid, loculicidally dehiscent; seeds small, numerous, obscurely rounded

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    Ovary superior, unilocular, bi- (rarely tri-) carpellary; placentas 4, parietal, separate to partially fused; style bilobed, peltate, orbicular or funnel-shaped

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    Stems erect, scaly, sometimes fleshy, simple or branched, glabrous to glandular-hairy

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    Inflorescence in East African species a cylindrical spike or spiciform raceme

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    Leafless, scapigerous, parasitic herbs subsisting by attachment to roots of other plants; variously and sometimes beautifully coloured, but without chlorophyll thus never green

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    Included Genus

     Information From

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