Acacia oshanesii F.Muell. & Maiden

Growth Form

Acacia oshanesii F.Muell. & Maiden is an erect shrub or tree that typically grows to a height of 2 to 12 m (6 ft 7 in to 39 ft 4 in).

Bark Characteristics

It has grey, green, or brown bark with a smooth or slightly fissured texture.

Branchlet Characteristics

Its branchlets range from angled to terete, with fine yellowish brown to white hairs growing along their ridges.

Leaf Rachis and Pinnae

This species has filiform leaves with a 2.5 to 12 cm (0.98 to 4.72 in) long rachis, which bears 7 to 27 pairs of pinnae measuring 1 to 4.7 cm (0.39 to 1.85 in) in length.

Pinnule Count

In turn, the pinnae hold 14 to 51 pairs of glabrous pinnules.

Pinnule Shape and Size

Pinnules have an oblong to narrowly oblong shape, measuring 1 to 3 mm (0.039 to 0.118 in) long and 0.5 to 0.7 mm (0.020 to 0.028 in) wide.

Flowering Period

It produces yellow flowers throughout the year.

Inflorescence Structure

Its simple inflorescences grow in axillary racemes, and take the form of spherical flower heads that hold 12 to 25 pale yellow or cream-coloured flowers.

Seed Pod Development

After flowering, coriaceous brownish black to bluish-black seed pods develop.

Seed Pod Shape and Size

The pods are usually curved, with a length of 3 to 14 cm (1.2 to 5.5 in) and width of 7 to 12 mm (0.28 to 0.47 in).

Distribution Range

The species is native to north eastern New South Wales in Australia, ranging from around Bellingen and Coffs Harbour in the south northward into south eastern Queensland.

Habitat and Substrate

It grows across a variety of habitats in gravelly, clay, sandy, or loamy soils, as a component of wet sclerophyll forest and rainforest plant communities.

Range and Habitat Context

Its entire range extends from around Maryborough in the north down to around Stanmore in the south, and it occurs in high-rainfall, low-altitude coastal areas.