Acacia longifolia (weed)
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Acacia longifolia (weed) (Andr.) Willd. - (Sydney golden wattle)
The plant is native to south-eastern Australia. It has been introduced into Portugal around 1850 to control sand erosion and is now considered an invasive environmental weed. It has also spread to South Africa in the 1980s. In both countries, the bud-galling wasp Trichilogaster acaciaelongifoliae has been released as a biological control agent.
The tree grows up to a height of 10 m. It has linear to elliptic leaves, around 25 cm long and 1-3 cm wide, with 2-4 primary veins. The inflorescences are 2-5 cm long spikes and have yellowish flowers. The pods are 5-15 cm long, the seeds are around 5 mm long, elliptic and shiny black.
- Other images of Acacia longifolia (weed) (Wikimedia Commons - click to enlarge)
seeds
