Leionema bilobum
Encyclopedia
Leionema bilobum, commonly known as Notched Phebalium, is a shrub species of the family Rutaceae
Rutaceae
Rutaceae, commonly known as the rue or citrus family, is a family of flowering plants, usually placed in the order Sapindales.Species of the family generally have flowers that divide into four or five parts, usually with strong scents...

. It is endemic to south-eastern 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...

.
The species was first formally described by English botanist John Lindley
John Lindley
John Lindley FRS was an English botanist, gardener and orchidologist.-Early years:Born in Catton, near Norwich, England, John Lindley was one of four children of George and Mary Lindley. George Lindley was a nurseryman and pomologist and ran a commercial nursery garden...

 from material collected during Thomas Mitchell's exploration of the Grampians
Grampians National Park
The Grampians National Park is a national park in Victoria, Australia, 235 kilometres west of Melbourne. The Park was listed on the Australian National Heritage List on 15 December 2006 for its outstanding natural beauty and being one of the richest indigenous rock art sites in south-eastern...

. His description was published in 1838 in Three Expeditions into the interior of Eastern Australia. Lindley gave it the name Phebalium
Phebalium
Phebalium is a genus of shrubs in the family Rutaceae, endemic to Australia. A number of species formerly included within this genus have been transferred to the genera Leionema and Nematolepis.Species include:...

 bilobum
. The species was transferred to the genus Leionema
Leionema
Leionema is a genus of more than 20 species of mostly small shrubs in the family Rutaceae, most of which are endemic to eastern Australia....

by Paul G. Wilson in 2003. Four subspecies were formally described in 2006:
  • bilobum - the nominate subspecies from the eastern Grampian Ranges, Victoria.
  • serrulatum - a long leaved form from Gippsland
    Gippsland
    Gippsland is a large rural region in Victoria, Australia. It begins immediately east of the suburbs of Melbourne and stretches to the New South Wales border, lying between the Great Dividing Range to the north and Bass Strait to the south...

    , Victoria.
  • thackerayense - a form with smooth-edged leaves without a bilobed tip. Occurs in the Western Grampians Ranges (including Mount Thackeray) and the Black Range.
  • truncatum - northern and eastern Tasmania
    Tasmania
    Tasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...

    .
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