Brachylaena discolor DC.


Cite taxon page as 'WFO (2020): Brachylaena discolor DC. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000016339. Accessed on: 28 Oct 2020'

Diagnostic Description

Leaves oblanceolate to obovate, rounded or sometimes briefly acuminate at apex but more constant in male than female plants; capitula large, mostly with distinct stalks with only a few scattered bracts; involucres of female capitula widely infundibuliform to cyathiform at base, (7-)10-18(-23) x (3.5-)5.0-10.0 (-12.0) mm, bracts narrowly ovate with apex acute and somewhat spreading; involucres of male capitula globose to cyathiform, (5.5-)6.0-13.0(-15.0) x (2.5-)4.0-6.0(-8.5) mm, bracts narrowly ovate with apex acute, somewhat spreading; synflorescences less dense than in B. transvaalensis.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Morphology

    Leaves with petioles mostly 5–16 mm. long; lamina mostly 5–12 x 1.3–5 cm., larger in coppice growth, oblanceolate to obovate, rarely oblong-elliptic, rounded sometimes briefly acuminate at apex, ± narrowly cuneate and usually tapering to a long petiole, entire and faintly revolute, or repand-dentate to serrate-or coarsely-dentate in the apical part, sometimes spinescent-denticulate; upper surface thinly araneose when young, or glabrous, shiny dull-green with subprominent reticulate venation; lower surface greyish tomentellous with prominent veins; lateral veins forked near the margin.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 2
    • ]. 

    A shrub or tree to 10(12) m. tall, usually evergreen; branches brown to dark-purplish, lenticellate and narrowly sulcate, at first greyish tomentellous soon glabrescent, ± leafy throughout.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 2
    • ]. 

    Phyllaries thinly coriaceous, acute, lanate on the margins otherwise glabrous; from c. 1 mm. long outside, the inner increasing to c. 4 mm. long in male capitula and to 6(9) mm. long in female capitula, becoming lanceolate or tapering-lorate; the outermost 5–11 series decreasing in size and extending onto upper part of the 1–10 mm. long capitulum stalk, the lower part of the capitulum stalk often with scattered small bracts or buds; bracts below the involucre lanate.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 2
    • ]. 

    Male flowers: corollas dull-yellow, 3–5 mm. long, lobes c. 1 mm. long and ± recurved; pappus sparse, uniseriate, setae 3–4 mm. long with seta barbs ± equalling the seta axis in width.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 2
    • ]. 

    Capitula numerous in dense terminal panicles 4–40 cm. long, or in short raceme-like panicles in leaf axils.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 2
    • ]. 

    Involucres mostly narrowly obconic, somewhat cyathiform in male capitula.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 2
    • ]. 

    Female flowers: corollas 3–6 mm. long, terete narrowing to the apex, lobes erect up to c. 0.5 mm. long; achenes pale-brownish to purplish, 3–4 mm. long, subcylindric-subfusiform, narrowly c. 8-ribbed, sparsely puberulous; pappus several-seriate, setae 4–5(7) mm. long, ± terete, barbellate.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 2
    • ]. 

    A shrub or tree to 10(12) m. tall, usually evergreen; branches brown to dark-purplish, lenticellate and narrowly sulcate, at first greyish tomentellous soon glabrescent, ± leafy throughout. Leaves with petioles mostly 5-16 mm. long; lamina mostly 5-12 x 1.3-5 cm., larger in coppice growth, oblanceolate to obovate, rarely oblong-elliptic, rounded sometimes briefly acuminate at apex, ± narrowly cuneate and usually tapering to a long petiole, entire and faintly revolute, or repand-dentate to serrate- or coarsely-dentate in the apical part, sometimes spinescent-denticulate; upper surface thinly araneose when young, or glabrous, shiny dull-green with subprominent reticulate venation; lower surface greyish tomentellous with prominent veins; lateral veins forked near the margin. Capitula numerous in dense terminal panicles 4-40 cm. long, or in short raceme-like panicles in leaf axils. Involucres mostly narrowly obconic, somewhat cyathiform in male capitula. Phyllaries thinly coriaceous, acute, lanate on the margins otherwise glabrous; from c. 1 mm. long outside, the inner increasing to c. 4 mm. long in male capitula and to 6(9) mm. long in female capitula, becoming lanceolate or tapering-lorate; the outermost 5-11 series decreasing in size and extending onto upper part of the 1-10 mm. long capitulum stalk, the lower part of the capitulum stalk often with scattered small bracts or buds; bracts below the involucre lanate. Male flowers: corollas dull-yellow, 3-5 mm. long, lobes c. 1 mm. long and ± recurved; pappus sparse, uniseriate, setae 3-4 mm. long with seta barbs ± equalling the seta axis in width. Female flowers: corollas 3-6 mm. long, terete narrowing to the apex, lobes erect up to c. 0.5 mm. long; achenes pale-brownish to purplish, 3-4 mm. long, subcylindric-subfusiform, narrowly c. 8-ribbed, sparsely puberulous; pappus several-seriate, setae 4-5(7) mm. long, ± terete, barbellate.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Habitat

    Abundant in dune and coastal forests, coastal woodlands, river mouths and mangrove margins.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Distribution

    Mozambique, South Africa (Cape Province and Natal); Swaziland.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Distribution Map

     
    • Introduced distribution
    Introduced into
    • Southern America Brazil Santa Catarina

      Bibliography

     Information From

    Compositae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • 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 - 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
    • C
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    http://floradobrasil.jbrj.gov.br
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • D Group Brazil Flora, REFLORA Program
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).
    Global Tree Search
    https://tools.bgci.org/global_tree_search.php
    BGCI. 2018. GlobalTreeSearch online database. Botanic Gardens Conservation International. Richmond, U.K. Available at www.bgci.org. Accessed on 30/11/2018.
    • F Botanic Gardens Conservation International