Chorilaena quercifolia, commonly known as Karri Oak, is a shrub

Shrub

A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...

 which is endemic to the Karri

Karri

Eucalyptus diversicolor, commonly known as the Karri, is a eucalypt which is native to the wetter regions of south west of Western Australia.-Description:...

 forests of south-west Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

. It is the sole species in the genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 Chorilaena.

Its height usually ranges from 1 to 4 metres and its width from 1 to 3 metres. The flowers are usually green, although yellow, white, red and pink forms are known. They appear in the late spring and early summer and are about 1.5 cm long and 1 cm wide.

The leaves are shaped like those of an oak

Oak

An oak is a tree or shrub in the genus Quercus , of which about 600 species exist. "Oak" may also appear in the names of species in related genera, notably Lithocarpus...

, hence the specific epithet quercifolia.