Acacia auriculiformis A.Cunn. ex Benth., Lond. J. Bot. 1 (1842)
Latin for 'ear-shaped'.

Synonyms
Racosperma auriculiforme (A.Cunn. ex Benth.) Pedley

Description
Sub-canopy tree up to 28 m tall and 50 cm dbh. Stipules present. Leaves curved, alternate, simple, parallel-veined, glabrous. Flowers ca. 4 mm diameter, yellow, protruding stamens, flowers placed in catkin-like inflorescence. Fruits ca. 65 mm in diameter, green-brown, curly pods, seeds black with orange.

Ecology
Originally growing on savannas, woodlands, swamp edges, coastal savannas, grasslands, monsoon forests and regrowth up to 90 m altitude in Australia and New Guinea, introduced in western Malesia where it is consequently mainly found in plantations or secondary, open vegetation types. On sandy soils.

Uses
Wood used for wood-pulp. Poles used for house construction. Bark locally collected for tannins. In western Malesia often used as ornamental roadside tree.

Distribution
Introduced in many places in western Malesia, but originally from northern Australia and New Guinea. In Borneo found in Sabah and East-Kalimantan.

Note
Observed to hybridize with Acacia mangium.