Cuscuta australis R.Br.
  • Prodr. Fl. Nov. Holl.


Cite taxon page as 'WFO (2020): Cuscuta australis R.Br. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000750809. Accessed on: 05 Jun 2020'

General Information

Stems golden, thin, ca. 1 mm in diam. Inflorescences lateral, compact cymose glomerules, few to many flowered, subsessile; bracts scaly. Pedicel 1-2.5 mm. Calyx cupular, ca. as long as corolla tube; sepals 3-5, oblong or circular, often unequal, 0.8-1.8 mm, apex rotund. Corolla white or creamy white, cupular, ca. 2 mm; lobes persistent, erect, ovate or oblong. Stamens inserted at sinus, shorter than lobes; scales shorter than tube, deeply 2-cleft, fimbrillate. Ovary depressed globose. Styles 2, equal or unequal in length; stigmas globose. Capsule enclosed by persistent corolla, depressed-globose, 3-4 mm in diam., irregularly opening, not circumscissile. Seeds 4, brownish, ovoid, ca. 1.5 mm, scabrous.

  • Provided by: [E].Flora Of CHina @ efloras.org
    • Source: [
    • 14
    • ]. 

    Morphology

    Flowers small, white

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

    Leafless parasitic twiner with very slender tangled stems bright yellow or reddish-orange in colour

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

    Stems fairly slender, up to 0.5 mm. in diameter.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Scales reaching nearly to the base of the filaments, much fringed apically, not bifid, slightly bifid or completely bifid and then consisting of one fringed lobe on either side of the areas of the corolla-tube below the filaments.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Corolla-lobes rounded, obtuse or somewhat triangular but blunt.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Stamens short up to 1 mm. long; filaments usually very short.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Flowers about 2 mm. long and broad (up to 3 mm. in fruit), arranged in rather loose to compact cymose clusters; pedicels shorter than the flowers.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Calyx-lobes rounded, obtuse.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Styles about 0.5–1 mm. long, divergent.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Capsule globose, not splitting at base, drying a reddish-brown colour; intrastylar opening 1–1.5 mm. long, often almost circular.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Seeds about 1.25 mm. long.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 12
    • ]. 

    Scales shorter than the tube, reaching nearly to the base of the filaments, much fringed apically, not bifid or variously bifid sometimes consisting of one fringed lobe on either side of the area of the corolla tube below the filaments.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Ovary globose; styles stout, shorter than the ovary, divergent and intrastylar aperture large.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Capsule globose or somewhat obpyriform, not splitting at base; intrastylar opening 1–1·5 mm. long, often almost circular.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Seeds ellipsoid to ovoid up to 1·5 mm. long.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Flowers 2–3 mm. long and broad, accrescent in fruit, often somewhat glandular, subsessile, often obpyriform in fruit.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Calyx about as long as the corolla tube; lobes broad, ovate-circular, obtuse, not overlapping.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Stems medium thick up to 0·5 mm. in diam.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Inflorescences rather loose to dense cymose and subglobose clusters.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Corolla campanulate; lobes rounded, obtuse or somewhat triangular but blunt, shorter than or as long as the tube, erect to somewhat spreading.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Stamens shorter than the corolla lobes; filaments usually very short and stout, more or less subulate; anthers broadly elliptic to subcircular.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 13
    • ]. 

    Twining parasite. Scales in corolla tube bifid at apex or entire. Corolla lobes obtuse, usually shorter than tube. Styles 2, free to base; stigmas globose. Flowers 5-mer-ous, subsessile, in globose clusters. Flowers cream or yellow.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 15
    • ]. 

    Stems medium, yellowish. Flowers often somewhat glandular, 2-3 mm long, subsessile, in loose to dense subglobose clusters. Calyx ± as long as corolla tube; lobes broad, ovate to suborbicular, apex rounded. Corolla campanulate; lobes shorter than or as long as tube, erect to somewhat spreading, broad, apex rounded. Stamens shorter than corolla lobes; filaments usually stout, ± subulate and often shorter than (sometimes ± as long as) broadly elliptic to suborbicular anthers. Scales oblong, shorter than tube, bifid or bilobed to entire, variously fimbriate. Ovary globose; styles shorter than ovary, intrastylar aperture 1.0-1.5 mm long. Capsule globose or somewhat obovoid, not dehiscent by circumscission, drying reddish brown. Seeds ellipsoid to ovoid, 1.25-2.0 mm long.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 16
    • ]. 

    Ecology

    Mostly on marsh plants.

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

    Habitat

    On swamp vegetation, e.g. Polygonum spp.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 15
    • ]. 

    Recorded mostly on swamp vegetation such as species of Centella, Glinus, Hydrocotyle, Leersia, Nymphaea, Papyrus and Polygonum.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 16
    • ]. 

    Distribution

    Found throughout the Old World, from southern Europe to Japan and Australia, widespread from West Africa to the Sudan and southwards to southern Africa (Botswana, the Northern Province and Gauteng). Also in Madagascar.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 16
    • ]. 

      Bibliography

     Information From

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