Angophora crassifolia is a small tree growing in the northern parts of 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...

, 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 rare plant with a ROTAP

ROTAP

Rare or Threatened Australian Plants, usually abbreviated to ROTAP, is a list of rare or threatened Australian plant taxa. Developed and maintained by the CSIRO, the most recent edition lists 5031 taxa. The list uses a binary coding system based on the IUCN Red List categories for "Presumed...

 rating of 2RCA. It seems to be restricted to the plateau areas in and around Ku-ring-gai Chase National Park

Ku-ring-gai Chase National Park

Ku-ring-gai Chase is a national park in New South Wales, Australia, 25 km north of Sydney located largely within the Ku-ring-gai, Hornsby, Warringah and Pittwater municipal areas. Ku-ring-gai Chase is also officially classed as a suburb by the Geographical Names Board of New South Wales...

 and Garigal National Park

Garigal National Park

Garigal National Park is a national park in New South Wales , 20 km north of central Sydney. The park is somewhat disjointed but covers the following areas:...

, growing on lateritic soils.

A small tree to 15 metres high, with tougher more rigid leaves and larger gumnuts than the related Angophora bakeri

Angophora bakeri

Angophora bakeri, known as the narrow-leaved or small-leaved apple, is a common woodland and forest shrub or tree of eastern Australia. It grows between two and ten metres tall on dry sandy soils. Named in honour of Richard Thomas Baker...

. The specific epithet crassifolia is derived from Latin, referring to the thick leaves. If this species was to be moved into the eucalyptus

Eucalyptus

Eucalyptus is a diverse genus of flowering trees in the myrtle family, Myrtaceae. Members of the genus dominate the tree flora of Australia...

 genus, the proposed new name would be Eucalyptus crassifolia.

The original specimen was collected beside Mona Vale Road near Terrey Hills

Terrey Hills, New South Wales

Terrey Hills is a suburb of northern Sydney, in the state of New South Wales, Australia. Terrey Hills is located 25 kilometres north of the Sydney central business district in the local government area of Warringah Council and is part of the Northern Beaches region.Terrey Hills is also considered...

by G. J. Leach on May 21st, 1975.