Acacia melanoxylon R.Br.


Cite taxon page as 'WFO (2020): Acacia melanoxylon R.Br. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000204086. Accessed on: 30 Oct 2020'

Morphology

Unarmed tree up to 20 m high; young branchlets angular, glabrous or the young shoots minutely pubescent. Leaves phyllodic, apparently simple, glabrous, mostly 6-12 x 0.6-1.2(2.5) cm, linear-lanceolate to oblanceolate or narrowly obovate, straight to falcate, narrowed basally, with 3-7 prominent longitudinal nerves and a conspicuous reticulate venation between the longitudinal nerves (on young plants bipinnate leaves are sometimes produced at the apex of the phyllode). Inflorescences globose, solitary or in short axillary racemes. Flowers pale yellowish-white; peduncles up to 6 mm long. Calyx more than half as long as the corolla. Corolla glabrous. Pods brown, 5-15 x 0.6-0.8 cm, oblong, falcate or variously coiled or spirally twisted, flattened, margins thickened, not constricted between the seeds, dehiscing longitudinally along both margins. Seeds dark brownish-black, 4-5 x ±2.5 mm, smooth, compressed; areole ±3x1 mm; funicle very long, thickened, almost encircling the seed in a double fold.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Resprouting shrub or tree to 35 m. Phyllodes linear-oblanceolate, with 3-7, longitudinal veins, dull dark green. Flowers in globose heads, pale yellow. Pods flat, straight or variously coiled, not constricted between seeds.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Habitat

    Slopes, forests and stream banks.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Distribution

    Introduced from Australia.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Australian weed.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

      Bibliography

    • 1 Ross, JH. 1975. Mimosoideae. Fl. S. Africa 16(1): 1 - 155. BRI, Pretoria.
    • 2 Schutte, AL. 2012. Fabaceae: Acacia Mill. 521 - 522. South African National Biodiversity Institute, Pretoria.

     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
    Fabaceae
    World Flora Online Data. 2017.
    • B CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C 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.
    • D Botanic Gardens Conservation International