Grevillea adenotricha is a shrub which is endemic

Endemic (ecology)

Endemism is the ecological state of being unique to a defined geographic location, such as an island, nation or other defined zone, or habitat type; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, all species of lemur are endemic to the...

 to the north of 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 has an erect habit, growing to a height of between 0.8 and 2 metres high with leaves which are 45 to 70 mm long and 15 to 25 mm wide. Red flowers generally appear between May and August in the species native range.

The species was first formally described by Donald McGillivray

Donald McGillivray

Donald John McGillivray in New South Wales, Australia, and is usually known as D.J. McGillivray. He is an Australian botanical taxonomist...

 in 1986 based on plant material collected from Manning Gorge in 1973.

It occurs on sandstone

Sandstone

Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...

outcrops.