Acacia implexa

Family Fabaceae

Hickory Wattle

Tall shrub to about 6 m high, with phyllodes 7–18 cm long. Regrowth and juvenile foliage is bipinnate. May spread vegetatively by root suckers following death of main stem. Longevity indefinite.

Flowers: Pale yellow–white heads, 30–50-flowered, 4–8 on extended axillary inflorescence, during January – February.

Fruit: Pod 10–20 cm long. Seeds released at maturity.

Seed: Hard-coated, black, ellipsoid 3.5 x 3 mm in size with cream coloured aril (food body possible ant dispersal mechanism). Has physical seed dormancy. Germinates readily after scarification.

Gallery images: seed, seedling, rootstock, resprout

 Ecology

  • Woodland habitat, mid shade to full sun.
  • Occasional in woodland at the Australian Botanic Garden.
  • Defoliated at night by bagmoths which shelter ar base during the day, often resulting in death of the stem.
  • Fire kills the stems but the plants resprout from base or root suckers.
  • Legumes reported to have nitrogen-fixing Rhizobium nodules on roots.

Ecology of Cumberland Plain Woodland

Acacia implexa plant

Acacia implexa flower

Acacia implexa fruit

Acacia implexa seed

Acacia implexa seed