Acacia mangium

Scientific nameAcacia mangium
Fabaceae; Subfamily: Mimosaceae
English: brown salwood, hickory wattle, mangium
Cambodia: acacia sleuk thom
Indonesia: mangge hutan, nak, sabah salwood, tongke hutan
Philippines: maber
Thailand: krathinthepha
Viet Nam: keo tai tuong
Evergreen tree with no thorns/spines (30–35 m tall) and often with a straight trunk [25–50 (–90) cm in diameter].
Bark: Greenish and smooth in young trees; rough, greyish brown to dark brown, hard, fissured near the base of older trees.
Leaves: Dark green, ‘leaves’ are expanded leaf stalks called phyllodes, straight on one side and slightly curved on the other (25 cm long and 3.5–10 cm wide), 4–5 main longitudinal veins, gland conspicuous at the base of the phyllodes.
Flowers: Numerous tiny white or cream flowers in loose spikes (5–12 cm long).
Fruits: Pods (several-seeded dry fruits that split open at maturity), green turning brown as they mature (8–10 cm long and 0.3–0.5 cm wide), initially straight and broad but irregularly coiled when ripe; seeds are black and shiny (3–5 mm long and 2–3 mm wide), attached to the pods by an orange-to-red folded appendage.
Australia, Indonesia and Papua New Guinea.
Fuelwood, building materials, timber, fibre, tannins, shade, shelter and ornament.
Roadsides, disturbed areas, wastelands, urban open space, plantations, croplands, forest edges/gaps, woodland edges/gaps and coastal areas.
In forests in Brunei A. mangium has displaced many native plants and, in particular, heath forest species (Osunkoya et al., 2005). The tree has also invaded fruit and coffee farms and has a negative impact on the germination and growth of two local rice varieties (Ismail and Metali, 2014). It also uses significant amounts of water, more that the natural vegetation that it replaces. By fixing nitrogen it also impacts on soil nutrient cycling.
Witt, Arne. 2017. Guide to the Naturalized and Invasive Plants of Southeast Asia. CAB International. Retrieved from on 9 October 2018
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Last updated on 02/13/2019 18:27