Acacia concurrens Pedley

Nomenclature and Growth Form

Acacia concurrens (common name curracabah) is a glabrous, glaucous single-stemmed shrub or tree that usually reaches a maximum height of 10 metres (33 feet).

Bark Characteristics

It has grey-black, fibrous bark with longitudinal fissures.

Branch Morphology

Its branches are stout, angular, brown, and covered in scurfy scales.

Phyllode Shape

The species has modified leaf-like phyllodes that range from very narrowly elliptic to narrowly elliptic in shape.

Phyllode Size and Margin Form

The upper margin of each phyllode is curved, while the lower margin is straight; phyllodes measure 80–160 mm (3.1–6.3 in) long and 12–35 mm (0.47–1.38 in) wide.

Phyllode Veins and Glands

Most phyllodes have 3 to 4 particularly prominent veins, with a small gland located up to 2 mm (0.079 in) above the base of the phyllode.

Flower Inflorescence

The flowers are arranged in pale yellow spikes that are 35–110 mm (1.4–4.3 in) long.

Flowering Period

Flowering takes place between March and September.

Seed Pod Morphology

The seed pods are linear, semicircular, and shaped somewhat like a string of beads, reaching 50–100 mm (2.0–3.9 in) in length.

Seed Characteristics

The seeds are elliptic, brownish black, and 3.5–4.5 mm (0.14–0.18 in) long.

General Distribution Range

This species is endemic to eastern Australia, where it occurs from south-eastern Queensland to northern New South Wales.

Coastal Distribution Limits

It is common in coastal areas ranging from around the Mooloolah River in Queensland down to the Hastings River in New South Wales.

Habitat and Soil Preferences

It grows on hillsides or plateaux in sandy or stony sandy loams, often over shale, as a component of the understorey in Eucalyptus forest or woodland.