''Leionema'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of more than 20 species of mostly small

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

s in the family

Rutaceae The Rutaceae () is a family (biology), family, commonly known as the rueRUTACEAE
in Bo ...

, most of which are

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to eastern

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

. Plants within this genus have scented foliage and clustered, star-shaped flowers which range in colour from cream to bright yellow. Prior to 1998, all species within this genus were included in the genus ''

Phebalium ''Phebalium'' is a genus of thirty species of shrubs or small trees in the family Rutaceae and is Endemism, endemic to Australia. The leaves are arranged alternately, simple and often warty, the flowers arranged singly or in umbels on the en ...

''.

Species list

The following is a list of species and subspecies accepted by the

Australian Plant Census The Australian Plant Census (APC) provides an online interface to currently accepted, published, scientific names of the vascular flora of Australia, as one of the output interfaces of the national government Integrated Biodiversity Information Sys ...

as at April 2020, and including the New Zealand endemic ''Leionema nudum'': *''

Leionema ambiens ''Leionema ambiens'' is a rare shrub growing in the Guyra district of New South Wales and Queensland, Australia. It has long stem clasping leaves and heads of white flowers in spring and early summer. Description ''Leionema ambiens'' is a small ...

'' (F.Muell.) Paul G.Wilson — forest phebalium *''

Leionema bilobum ''Leionema bilobum'', commonly known as notched phebalium, is a shrub species of the family Rutaceae. It is endemic to south-eastern Australia. The species was first formally described by English botanist John Lindley from material collected dur ...

'' (Lindl.) Paul G.Wilson — notched phebalium ** ''Leionema bilobum'' (Lindl.) Paul G.Wilson subsp. ''bilobum'' ** ''Leionema bilobum'' subsp. ''serrulatum'' (F.Muell.) Duretto & K.L.Durham ** ''Leionema bilobum'' subsp. ''thackerayense'' Duretto & K.L.Durham ** ''Leionema bilobum'' subsp. ''truncatum'' (Hook.f.) Duretto & K.L.Durham *''

Leionema carruthersii ''Leionema carruthersii'' is a small shrub that is endemic to southern New South Wales in Australia. It has mostly greenish-yellow flowers, distinctive stamens and lance to egg-shaped leaves. Description ''Leionema carruthersii'' is a small shr ...

'' (F.Muell.) Paul G.Wilson *'' Leionema ceratogynum'' N.G.Walsh *'' Leionema coxii'' (F.Muell.) Paul G.Wilson *''

Leionema dentatum ''Leionema dentatum'', commonly known as toothed phebalium is a species of large shrub or small tree that is endemic to New South Wales, Australia. It has variable leaves, slender branches and clusters of cream-yellow flowers in spring. Descr ...

'' (Sm.) Paul G.Wilson — toothed phebalium *'' Leionema diosmeum'' (A.Juss.) Paul G. Wilson *''

Leionema elatius ''Leionema'' is a genus of more than 20 species of mostly small shrubs in the family Rutaceae, most of which are endemic species, endemic to eastern Australia. Plants within this genus have scented foliage and clustered, star-shaped flowers which ...

'' (F.Muell.) Paul G.Wilson — tall phebalium ** ''Leionema elatius'' subsp. ''beckleri'' (F.Muell.) Paul G.Wilson ** ''Leionema elatius'' (F.Muell.) Paul G.Wilson subsp. ''elatius'' *'' Leionema ellipticum'' Paul G.Wilson *'' Leionema equestre'' (D.A.Cooke) Paul G.Wilson *''

Leionema gracile ''Leionema gracile'', commonly known as Mt Greville phebalium, is a shrub species that is endemic to Queensland, Australia. It is a small shrub with spreading leaves, white petals and flowers from autumn to spring. Description ''Leionema grac ...

'' (C.T. White) Paul G.Wilson *'' Leionema hillebrandii'' (J.H. Willis) Paul G.Wilson *''

Leionema lachnaeoides ''Leionema lachnaeoides'', is a tall shrub with aromatic leaves and yellow flowers from winter to late spring. It is restricted to the Blue Mountains in New South Wales. Description ''Leionema lachnaeoides'' is a tall shrub to high with white ...

'' (A.Cunn.) Paul G.Wilson *''

Leionema lamprophyllum ''Leionema lamprophyllum'', commonly known as shiny phebalium, is a shrub species that is endemic to Australia. It grows up to 2 metres in height, with leaves that are 3–10 mm long and 2–4 mm wide. White flowers are produced in sp ...

'' (F.Muell.) Paul G.Wilson — shiny phebalium ** ''Leionema lamprophyllum'' subsp. ''fractum'' S.A.J.Bell ** ''Leionema lamprophyllum'' (F.Muell.) Paul G.Wilson subsp. ''lamprophyllum'' ** ''Leionema lamprophyllum'' subsp. ''obovatum'' F.M.Anderson ** ''Leionema lamprophyllum'' subsp. ''orbiculare'' F.M.Anderson *'' Leionema microphyllum'' (F.Muell.) Paul G.Wilson *'' Leionema montanum'' (Hook.) Paul G.Wilson *''

Leionema nudum ''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. Plants within this genus have scented foliage and clustered, star-shaped flowers which range in colour ...

'' (Hook.) Paul G.Wilson — Mairehau, endemic to the North Island of New Zealand *'' Leionema obtusifolium'' (Paul G.Wilson) Paul G.Wilson *'' Leionema oldfieldii'' (F.Muell.) Paul G.Wilson *''

Leionema phylicifolium ''Leionema phylicifolium'', commonly known as alpine phebalium, is a shrub that is endemic to south-eastern Australia. It is a small shrub with green, smooth, leathery leaves and pale yellow flowers in spring. Description ''Leionema phylicifoli ...

'' (F.Muell.) Paul G.Wilson — mountain phebalium *''

Leionema praetermissum ''Leionema praetermissum'', is a shrub with warty stems covered in hairs, white flowers with spreading petals, and prominent stamens. It has a restricted distribution in New South Wales. Description ''Leionema praetermissum'' is a shrub to high ...

'' P.R.Alvarez & Duretto *''

Leionema ralstonii ''Leionema ralstonii'', is a small shrub with angular, smooth branchlets and pale green flowers in winter. It is restricted to the south coast of New South Wales. Description ''Leionema ralstonii'' is a small shrub to about high with smooth, ...

'' (F.Muell.) Paul G.Wilson *''

Leionema rotundifolium ''Leionema rotundifolium'', is a dense shrub with needle-shaped stems and pale lemon to white terminal flowers. It is found in New South Wales and Queensland. Description ''Leionema rotundifolium'' is a bushy, thick shrub to high with terete st ...

'' (A.Cunn. ex Endl.) Paul G.Wilson — round-leaved phebalium *'' Leionema scopulinum'' B.M.Horton & Crayn *'' Leionema sympetalum'' (Paul G.Wilson) Paul G.Wilson — Rylstone Bell *'' Leionema viridiflorum'' (Paul G.Wilson) Paul G.Wilson — green phebalium *''

Leionema westonii ''Leionema westonii'' is a flowering plant in the family Rutaceae and is endemic to New South Wales. It has white flowers borne in upper leaf axils. Description ''Leionema westonii'' is a multi-branched shrub to high and forms a rhizome. The st ...

'' L.M.Copel. & I.Telford

References

*
Australian Plant Name Index (APNI): ''Leionema'' (species)
* ttp://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&search=yes&namesearch=Leionema&dist= PlantNET — New South Wales Flora Online ''Leionema'' (list of species)* Taxa named by Ferdinand von Mueller Zanthoxyloideae genera {{Rutaceae-stub