Acacia obliquinervia Tindale

Scientific Name

Acacia obliquinervia Tindale

Description

Growth Habit

This species grows as a shrub or tree reaching 1 to 15 metres (3 ft 3 in to 49 ft 3 in) in height, with an erect or spreading growth habit.

Bark and Branchlets

It has dark brown, deeply fissured bark, and angled or flattened glabrous branchlets that are often covered in a fine white powdery coating.

Phyllode Structure

Like most Acacia species, it has phyllodes rather than true leaves. These evergreen, glabrous phyllodes are shaped obovate to narrowly oblanceolate, occasionally narrowly elliptic, measuring 5 to 17 cm (2.0 to 6.7 in) long and 9 to 55 mm (0.35 to 2.17 in) wide, with a prominent midvein.

Inflorescence Arrangement

It blooms between August and December, producing simple inflorescences arranged in clusters of 3 to 16 in racemes along a zig-zagged axis 1 to 10 cm (0.39 to 3.94 in) long.

Flower Head Features

The inflorescences bear spherical flower-heads 5 to 8 mm (0.20 to 0.31 in) in diameter, containing 20 to 35 bright yellow flowers.

Seed Pod Characteristics

After flowering, it forms chartaceous to thinly coriaceous oblong seed pods that are 4 to 15 cm (1.6 to 5.9 in) long and 12 to 25 mm (0.47 to 0.98 in) wide, and the pods may be covered in a fine white powdery coating.

Seed Traits

The dull to slightly shiny black seeds inside the pods are shaped oblong-elliptic to ovate, and measure 5 to 6 mm (0.20 to 0.24 in) long.

Distribution

Native Range

The species is native to south eastern New South Wales, the Australian Capital Territory, and Victoria in eastern Australia.

New South Wales Habitat

In New South Wales, it occurs in tableland areas of the Great Dividing Range south of the Goulburn River valley, where it grows in soils derived from surrounding sandstone as part of moist or dry sclerophyll forest and woodland communities.

Victorian Distribution

In Victoria, it occurs in central and eastern parts of the state, with a range extending from the Grampians to areas east of Melbourne.

Altitudinal Habitat

It is commonly found in montane woodlands and forests at altitudes between 500 and 1,700 m (1,600 to 5,600 ft).