Hibiscus trionum L.
  • Sp. Pl.
  • Flower-of-an-hour, bladder ketmia, Venice mallow, ketmie trilobée


Cite taxon page as 'WFO (2020): Hibiscus trionum L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000723167. Accessed on: 06 Jun 2020'

General Information

Herbs annual, erect or procumbent, 25-70 cm tall; stems slender, white stellate hirsute. Stipules filiform, ca. 7 mm, stellate coarsely hirsute; petiole 2-4 cm, stellate hirsute and stellate puberulent; leaf blade 3-6 cm in diam., dimorphic; blades on proximal part of stem orbicular, those on distal part of stem palmately 3-5-lobed, central lobe longer, lateral lobes shorter, lobes obovate to oblong, usually pinnate, sparsely stellate spiny hairy abaxially, sparsely hirsute or glabrous adaxially. Flowers solitary, axillary. Pedicel ca. 2.5 cm, elongated to 4 cm in fruiting, stellate hirsute. Epicalyx lobes 12, filiform, connate at base, ca. 8 mm, hirsute. Calyx greenish, campanulate, swollen, connate for ca. 1/2 length, 1.5-2 cm, membranous, long hirsute or stellate hirsute, lobes 5, triangular, longitudinally purple-veined. Corolla very pale yellow with purple center, 2-3 cm in diam.; petals 5, obovate, ca. 2 cm, abaxially sparsely very minutely puberulent. Staminal column ca. 5 mm; filaments slender, free for ca. 3 mm; anthers yellow. Styles 5, glabrous. Capsule oblong-globose, ca. 1 cm in diam., coarsely hirsute; mericarps 5, endocarp black, thin, exocarp papery. Seeds black, reniform, glandularly verrucose. Fl. Jul-Oct.

  • Provided by: [B].Flora Of CHina @ efloras.org
    • Source: [
    • 6
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    Herbs, annual, to 0.6(–1) m, herbage throughout with mixture of coarse, simple or few-armed stellate hairs and fine, many-armed stellate hairs. Stems also with line of fine, curved hairs extending from node to node. Leaves: linear, 1–2.5 cm, margins ± ciliate. Flowers lasting a few hours, ascending or erect; calyx divided 1/2 length, campanulate, 0.8–1.8 cm, accrescent and conspicuously inflating to enclose fruit, becoming scarious, primary veins zigzag, lobes broadly trullate, apices acute, nectaries absent; corolla rotate, petals yellow or cream with conspicuous purple-brown spot basally, purplish abaxially where exposed in bud, obovate to broadly obovate, 1.5–3(–4) × 1–2(–3) cm, apical margins repand, finely hairy abaxially where exposed in bud; staminal column dark red to purple, 0.4–0.7(–1.1) cm, abruptly expanded below to form cup over ovary, bearing filaments in distal 1/2, free portion of filaments not secund, 2–3(–5) mm; pollen yellow-orange; styles usually white to cream, yellowish, or maroon, 2–3(–6) mm; stigmas dark red to purple. Capsules dark brown-black, ellipsoid to ovoid, 1.2–1.5 cm, apex obtuse to broadly acute, hairy. Seeds dark gray-brown, reniform-ovoid, somewhat depressed laterally, 2–2.5 mm, sparingly and minutely papillose. 2n = 28, 56 (both cultivars).

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 7
    • ]. 

    "Branching, hairy annual 3–5 dm; lvs long-petioled, deeply 3-parted, the segments oblong to obovate, coarsely serrate or lobed; cal conspicuously veined, hispid on the nerves with spreading simple hairs from swollen bases; pet 1.5–4 cm, pale yellow with purple base, expanded only a few hours; mature cal inflated, 5-angled, enclosing the hirsute fr; seeds finely verrucose; 2n=28, 56. Native of s. Europe; fields, roadsides, and waste places from N.S. to Minn., s. to Fla. and Tex. July–Sept."

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

    Flowers yellow with a purple centre.

  • Provided by: [F].Plants Of the World Online Portal - FWTA
    • Source: [
    • 1
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    Much-branched hispid annual

  • Provided by: [F].Plants Of the World Online Portal - FWTA
    • Source: [
    • 1
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    Style-branches 2 mm. long.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
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    Capsule 10–14 mm. in diam., subglobose, hispid, enclosed in the inflated calyx.

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

    Seeds 2 × 1·5 cm., subreniform, tuberculate.

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

    Staminal tube 3–4 mm. long, somewhat glandular; free parts of filaments 3–4 mm. long.

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

    Petals 2–3 × 1·5–3 cm., obovate, nearly glabrous.

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

    Epicalyx of 12 bracts; bracts 7–14 mm. long, filiform, often hispid.

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

    Calyx up to 2·5 cm. long, scarious with purplish longitudinal veins, stellate-pilose or hispid, becoming inflated; lobes united nearly to the apex.

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

    Leaf-lamina 2–6 × 2–6 cm., suborbicular to ovate in outline (or hastate but not apparently in our area), varying from not lobed to deeply 3–5-palmatilobed or incised, hispid on the nerves, apex rounded, base truncate to slightly cordate, 3–5-nerved, lobes pinnately incised; petiole 1–4 cm. long, hairy like the young stems; stipules 4–8 mm. long, linear.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
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    Flowers 2·5–4 cm. in diam., white, cream or yellow, with purple centres, solitary, axillary; peduncle up to 5·5 cm. long, hairy like the young stems.

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

    Annual herb up to 1·5 m. tall; young stems stellate-pubescent to stellate-tomentose or hispid.

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

    Annual herb, up to 1.5 m high. Calyx inflated, scarious, enclosing capsule, lobes connate nearly to apex. Flowers white, cream or yellow with purple centres.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 9
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    Stiffly hairy annual. Leaves mostly 3-5-palmatisect, toothed. Flowers pedunculate in upper axils, whitish or pale yellow with dark eye, epicalyx of 10-12 linear lobes, calyx bell-shaped, purple-veined, swollen in fruit, staminal tube 3-4 mm long; seeds tuberculate.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 10
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    Annual herb, up to 1.5 m high. Stems straggling; sparsely hairy. Leaves with blade usually deeply 3-5-lobed, ± 70 x 60 mm, margins toothed to lobed. Flowers: solitary; epicalyx with 12 segments; calyx papery, veins green to purple; corolla 20-40 mm in diameter; petals 20-30 mm long, white to cream-coloured with a deep red centre, closing by early afternoon; Oct.-Jun. Fruit with calyx becoming inflated, enclosing fruit.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 11
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    Stiffly hairy annual, up to 1.5 m tall. Leaves mostly 3-5-palmatisect, toothed. Flowers pedunculate in upper axils, yellow with dark eye, epicalyx of 21-25 mmear lobes, calyx bellshaped, purple-veined, swollen in fruit.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 12
    • ]. 

    Habitat

    Upland grasslands and a common weed of cultivated land and waste places.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 9
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    Stony slopes and forest margins.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 10
    • ]. 

    Vredefort Dome Savanna; Dry Grassland; Mesic Grassland; Dwarf Karroid Shrubland; Zastron Moist Grassland. Grassland, weed of cultivated land and waste places.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 11
    • ]. 

    Riverbanks, stony slopes and forest margins.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 12
    • ]. 

    Distribution

    Cape Peninsula to Port Elizabeth, introduced from Old World tropics.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 10
    • ]. 

    Widespread in southern Africa, introduced from Old World tropics.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 12
    • ]. 

    Other Local Names

    NameLanguageCountry
    Flower-of-an-hour, bladder ketmia, Venice mallow, ketmie trilobée

      Bibliography

     Information From

    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • A All Rights Reserved
    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
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Flora of North America Association
    Malvaceae
    World Flora Online Data. 2017.
    • D 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
    • E
    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
    • F The Trustees of the Royal Botanic Gardens, Kew
    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.
    • G Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).