Australian crimson oak is a tall, spreading shrub or small tree up to 7m high. It is a noxious woody evergreen with deciduous flowers. This hardy species grows readily in warm climates and coastal environments.
A small evergreen tree, growing 3-6m in height with branchlets covered in greyish or silvery-blue foliage. Leaves are 20-50mm long and are arranged around branchlets spirally.
Flowers which bloom in July to September, are bright yellow, globular shaped with showy sprays. Fruits are greyish-brown pods, approximately 100mm in length.
A deciduous tree up to 12m high, exceptionally 25m, with an oval or rounded crown and bark that is dark brown and deeply furrowed. It suckers freely and often forms thickets. Young stems and branchlets have short spines. Small, bright green leaves above and paler beneath which become yellow in autumn. White, fragrant flowers in drooping sprays from September to November. Reddish-brown pods. The seeds, leaves and inner bark are poisonous seeds.
The butterfly orchid tree grows up to 6-10m high. Leaves are thick, deeply divided into two lobes and 100mm long. Flowers are colourful in shades of blotched pink to red striped, as well as cream or purple. They are 80-100mm wide with narrow, non-overlapping petals and three fertile stamens. The fruits consist of green elongated pods which turn dark brown.
Much branched, densely spiny shrub growing up to 1,5m high with hairy, striated young branches and green spines which are deeply furrowed, rigid and sharp pointed. The dark green leaves are distinctly jagged and pointy. It produces bright yellow, fragrant flowers in spring, followed by dark brown or black, hairy pods.