River Cooba Drew Avery/Flickr

River Cooba

Acacia Stenophylla

Erect shrub or tree that grows up to 20 m high. Usually has a single trunk 15 - 20 cm in diameter at breast height, with pendulous branches. Bark of main trunk is grey and longitudinally fissured, while other branches have smooth, pale green bark.

Leaves

Phyllodes (flattened leaf stems) are long (15 - 40 cm) and thin (2 - 7 mm), straight to weakly curved, dark green and pointed. Veins numerous, closely parallel, narrower than intervein spaces.

Flowers

Flowers form groups of 25 - 40, forming inflorescences (flower clusters) cream in colour.

Fruits/Seeds

Seed pods moniliform (jointed or constricted at regular intervals so as to resemble a string of beads); become woody as they mature. They contain 6 - 12 viable seeds.

Species: WhatToObserve Image

What to Observe

  • First fully open single flower

  • Full flowering (record all days)

  • End of flowering (when 95% of the flowers have faded)

  • No flowering

  • Seed pods (record all days)

Climate Adaptations

Climate change will directly affect the ecological communities in which this alpine species resides. An increase in temperature and extreme heat events will reduce viable habitat for this species.

Species: WhenAndWhere Image

When and Where

When To Look

  • Flowers March to August, but can flower throughout the year
  • Seed pods known to mature September to December depending on where it is found

Where To Look

  • From the Kimberley region of Western Australia through the Northern Territory to Queensland, and south into South Australia, Victoria and NSW
  • Often found near water sources in arid inland areas across Australia
  • Usually grows in eucalypt woodland or forest close to rivers
Species: WhatElse Image

What Else?

Other common names include the Eumong and Shoestring Acacia.