Gompholobium grandiflorum, known as the Large Wedge-pea, is a shrub of the pea family which is endemic to the central eastern parts of New South Wales

New South Wales

New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

, in Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. A common plant around Sydney

Sydney

Sydney is the most populous city in Australia and the state capital of New South Wales. Sydney is located on Australia's south-east coast of the Tasman Sea. As of June 2010, the greater metropolitan area had an approximate population of 4.6 million people...

 and the Blue Mountains. It is seen as far south as Jervis Bay

Jervis Bay

Jervis Bay is a large bay bounded by the state of New South Wales, the Jervis Bay Territory, and a detached enclave of the Australian Capital Territory. HMAS Creswell is located between Jervis Bay Village and Greenpatch in the Jervis Bay Territory.-History:...

.

The habitat is heath on sandstone soils, open forest or eucalyptus woodland. The specific epithet grandiflorum refers to the impressive lemon/yellow flowers.

Leaves are in threes, very narrow, 20 to 30 mm long and 1 mm wide. Flowering occurs in late winter and spring. The fruit is a pod, around 15 mm long.