Grevillea maxwellii 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 south west

Southwest Australia

Southwest Australia is a biodiversity hotspot that includes the Mediterranean forests, woodlands, and scrub ecoregions of Western Australia. The region has a wet-winter, dry-summer Mediterranean climate, one of five such regions in the world...

 region 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 grows to between 0.2 and 1.2 metres in height. The flowers, which have a pink-orange or pink-red perianth

Perianth

The term perianth has two similar but separate meanings in botany:* In flowering plants, the perianth are the outer, sterile whorls of a flower...

 and pink-red style, appear in May and from September to November 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, his description published in New Names in Grevillea (Proteaceae). It is classified as "Declared Rare Flora" under the Wildlife Conservation Act

Wildlife Conservation Act 1950

The Wildlife Conservation Act 1950 is an act of the Western Australian Parliament that provides the statute relating to conservation and legal protection of flora and fauna....

 in Western Australia.

It is similar in appearance to G. asparagoides

Grevillea asparagoides

Grevillea asparagoides is a shrub which is endemic to the south-west of Western Australia. It grows up from 0.5 to 2 metres in height and produces bright red flowers between July and December in its native range....

, G. secunda and G. batrachioides.