Casuarina cunninghamiana


Casuarina cunninghamiana, commonly known as river oak or river she-oak, is a she-oak species of the genus Casuarina. The native range in Australia extends from Daly River in the Northern Territory, north and east in Queensland and eastern New South Wales.

Description

The River Oak is an evergreen tree with fine greyish green needle-like foliage that grows to a height of with a spread of about. The trunk is usually erect, with dense rough bark. Flowers are reddish-brown in the male and red in the female. Cones are small, nearly round to elongated and about across.

Habitat

Trees are usually found in sunny locations along stream banks and swampy areas. It's widely recognised as an important tree for stabilising riverbanks and for soil erosion prevention accepting wet and dry soils. The foliage is quite palatable to stock. C. cunninghamiana is frost tolerant down to around and is widely used effectively as a screening plant. It is useful on windy sites and is also suited to coastal areas. C. cunninghamiana has been introduced into several other countries for the purpose of agroforestry.

Subspecies

There are two subspecies:
The species has many common names including River Oak, River She-oak or Creek Oak.

Invasive species

Casuarina cunninghamiana is an invasive species in the Everglades in Florida and in South Africa.