Convolvulaceae Juss.
  • Gen. Pl. 132. 1789. (4 Aug 1789)


Cite taxon page as 'WFO (2020): Convolvulaceae Juss. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-7000000149. Accessed on: 28 Nov 2020'

General Information

Herbs or shrubs, usually with twining or climbing stems or erect, often with milky juice. Leaves alternate, simple, entire, dissected, or compound, absent in parasitic species. Flowers solitary, axillary or in cymes, racemes, panicles, umbels, or capitula, bisexual, actinomorphic, usually 5-merous, often showy. Sepals free, often persistent, sometimes enlarged in fruit. Corolla sympetalous, funnelform, campanulate, salverform, or urceolate; limb subentire or deeply lobed. Stamens alternating with corolla lobes, adnate to corolla; filaments filiform, equal or unequal in length; anthers introrse, laterally and longitudinally dehiscing; pollen smooth or finely spiny. Disc ringlike or cupular. Ovary superior, mostly 2-carpellate, 1- or 2-loculed, rarely 3- or 4-loculed; ovules basal, erect. Styles 1 or 2, terminal (gynobasic in Dichondra) or very short or absent; stigma entire or 2- (or 3)-lobed, rarely peltate. Fruit a capsule, dehiscing by valves, circumscissile, or irregularly shattering, less often a berry or nutlike. Seeds usually trigonous, smooth or pubescent.

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

    Fruit a capsule or fleshy

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    Seeds sometimes hairy, with rather scanty endosperm and more or less curved embryo

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    Cotyledons folded or crumpled

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    Sepals usually free, imbricate, persistent

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    Corolla gamopetalous, mostly funnel-shaped, lobes 5, contorted

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    Stamens 5, inserted towards the base of the corolla-tube and alternate with the lobes; anthers 2-celled, opening lengthwise

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    Ovary often surrounded by a disk, 1-4-celled; ovules solitary or paired, erect; style terminal

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    Flowers hermaphrodite, actinomorphic; bracts often forming an involucre

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    Herbaceous or woody plants, often climbing, juice usually milky

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    Leaves alternate, simple; stipules absent

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    Seeds 1–4 (rarely 6 or 10), with endosperm

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    Styles 1–2(–3), simple and terminal; stigmas 1–4, variously shaped

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    Fruit usually dry and capsular, rarely a berry or nut-like

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    Sepals 4–5, imbricate, free or joined at the base, often accrescent

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    Corolla sympetalous, variable but often funnel-shaped or salver-shaped, entire or 4–5-lobed, induplicate-valvate or contorted

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    Stamens (3–)4–5, inserted in the corolla-tube, alternating with the lobes; pollen smooth or spinulose

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    Ovary superior, entire or 2–4-lobed, of 2–3 carpels, 1–4 (very rarely 3 or 5)-locular

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    Flowers usually bracteate, axillary or terminal, solitary or in various inflorescences, almost always regular, hermaphrodite save in a very few small genera

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    Leaves alternate, exstipulate, usually simple, entire or often lobed

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    Herbs, shrubs or leafless parasites, rarely small trees, frequently twining or prostrate, less often erect

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    Fruit usually dry, a loculicidal (or sometimes irregularly dehiscent) capsule, or less often indehiscent and baccate or nut-like

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    Seeds 1–4 (rarely 6 or 10) with endosperm; embryo large, straight or curved, with 2 plicate, often bifid cotyledons, embedded in a hard, often cartilaginous endosperm

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    Herbs or shrubs, rarely small trees, frequently twining or prostrate, less often erect, provided with diverse sorts of glandular and eglandular hairs, besides simple, 2-armed or stellate hairs

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    Flowers often large and showy, usually bracteate, axillary or terminal, solitary or in various inflorescences, almost always regular, bisexual save in a very few small genera, 5-merous as to the calyx, corolla and androecium (4-merous in Hildebrandtia)

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    Leaves alternate, exstipulate, usually simple, entire or toothed to often lobed

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    Corolla sympetalous, variable but often funnel-shaped or salver-shaped, entire or 4–5-lobed, induplicate-valvate or contorted

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    Sepals imbricate, sometimes unequal, generally free or connate at the base, often accrescent

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    Ovary superior, entire or 2–4-lobed, of 2(3–5) carpels united, (1) 4 (3–5)-locular, usually with an annular nectary-disk around the base; styles 1–2 (3) mostly terminal; stigmas 1–4 variously shaped; ovules 2 per carpel (rarely many in Humbertia), basal or basal-axile, erect, anatropous

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    Stamens as many as and alternate with lobes or connate members of the corolla, inserted in the corolla tube; filaments often unequal; anthers tetrasporangiate or dithecal, opening by longitudinal slits; pollen smooth or spinulose

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    Distribution

    This is an extremely natural family and the genera are therefore difficult to limit satisfactorily. I have followed the classification used by van Ooststroom (Flora Malesiana, ser. 1, 4 (4) : 388–512 (1953)) with but few changes. It seems best to do this rather than to attempt to classify the family on different lines from a knowledge of the African genera alone. The original arrangement which is due to Hans Hallier has the drawback of using a pollen-character. In the key which follows, the obligatory use of this character, which is not really difficult to observe, has been left until near the end. It is helpful to remember that genera 1–15 have smooth pollen and the rest have spinous pollen

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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 - 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
    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
    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
    • D
    Convolvulaceae
    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).