''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all

native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Native Americans (disambiguation) In arts and entert ...

to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in

cymes An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on ...

with four sepals, four

petal Petals are modified Leaf, leaves that surround the reproductive parts of flowers. They are often advertising coloration, brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''c ...

s and eight

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

s. The fruit is a follicle fused at the base in groups of up to four, each containing one or two brown or black seeds.

Description

Plants in the genus ''Medicosma'' are shrubs or trees that usually have simple leaves arranged in opposite pairs but the leaves are sometimes arranged alternately and sometimes trifoliate. The flowers are usually arranged in cymes, sometimes solitary, in leaf

axil A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, st ...

s and are usually

bisexual Bisexuality is a romantic or sexual attraction or behavior toward both males and females, or to more than one gender. It may also be defined to include romantic or sexual attraction to people regardless of their sex or gender identity, whi ...

with four sepals, four petals and eight stamens. The sepals are fused at the base and persist in the fruit. The petals are usually free from each other but usually overlap each other slightly. The fruit consists of up to four oval follicles fused at the base, each containing one or two brown to black seeds.

Taxonomy

The genus ''Medicosma'' was first formally described in 1862 by

William Jackson Hooker Sir William Jackson Hooker (6 July 178512 August 1865) was an English botanist and botanical illustrator, who became the first director of Kew when in 1841 it was recommended to be placed under state ownership as a botanic garden. At Kew he ...

in '' Genera Plantarum''.

Species list

The following is a list of species accepted by

Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...

as at July 2020: * ''

Medicosma articulata ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

T.G.Hartley Thomas Gordon Hartley (9 January 1931 in Beaumont, Texas – 8 March 2016 in Canberra, Australia) was an American botanist. Biography In 1955 Hartley graduated in botany with the academic degree Bachelor of Science at the University of Wisconsin- ...

– (New Caledonia) * ''

Medicosma congesta ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma cunninghamii ''Medicosma cunninghamii'', commonly known as pinkheart or bonewood, is a species of shrub or small tree in the family Rutaceae and is endemic to eastern Australia. It has simple, narrow oblong to lance-shaped leaves and small white or cream-col ...

'' (Hook.)

Benth. George Bentham (22 September 1800 – 10 September 1884) was an English botanist, described by the weed botanist Duane Isely as "the premier systematic botanist of the nineteenth century". Born into a distinguished family, he initially studie ...

Hook.f. Sir Joseph Dalton Hooker (30 June 1817 – 10 December 1911) was a British botanist and explorer in the 19th century. He was a founder of geographical botany and Charles Darwin's closest friend. For twenty years he served as director of t ...

– (N.S.W., Qld.) * ''

Medicosma diversifolia ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma elliptica ''Medicosma elliptica'', commonly known as Bulburin medicosma, is a species of shrub or small tree in the family Rutaceae and is endemic to a restricted area of Queensland. It has elliptical leaves and white flowers borne singly or in small grou ...

'' T.G.Hartley – (Qld.) * ''

Medicosma emarginata ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma exigua ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma fareana ''Medicosma fareana'', commonly known as white aspen, is a species of rainforest small tree in the family Rutaceae and is endemic to north Queensland. It has elliptical leaves and white or cream-coloured flowers borne singly or in small groups ...

'' (

F.Muell. Baron Sir Ferdinand Jacob Heinrich von Mueller, (german: Müller; 30 June 1825 – 10 October 1896) was a German-Australian physician, geographer, and most notably, a botanist. He was appointed government botanist for the then colony of Victo ...

) T.G.Hartley – (Qld.) * ''

Medicosma forsteri ''Medicosma forsteri'' is a species of small tree in the family Rutaceae and is endemic to a restricted area of Queensland. It has elliptical leaves and cream-coloured flowers borne singly or in small groups in leaf axils. Description ''Medicos ...

'' T.G.Hartley – (Qld.) * ''

Medicosma glandulosa ''Medicosma glandulosa'' is a species of shrub or small tree in the family Rutaceae and is endemic to far north Queensland. It has elliptical to egg-shaped leaves and flowers that are white with red tips or cream-coloured, borne singly or in sma ...

'' T.G.Hartley – (Qld.) * ''

Medicosma gracilis ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma heterophylla ''Medicosma heterophylla'' is a species of small tree in the family Rutaceae and is endemic to a restricted area of far north Queensland. It has simple and trifoliate, elliptical leaves and leaflets, and cream-coloured to pink or reddish flowers ...

'' T.G.Hartley – (Qld.) * ''

Medicosma latifolia ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma lerati ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and e ...

'' ( Guillaumin) T.G.Hartley – (New Caledonia) * ''

Medicosma mulgraveana ''Medicosma mulgraveana'' is a species of small tree in the family Rutaceae and is endemic to a restricted area of far north Queensland. It has mostly trifoliate leaves with elliptical to egg-shaped leaflets and white flowers borne in small g ...

'' T.G.Hartley – (Qld.) * ''

Medicosma obliqua ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and e ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma obovata ''Medicosma obovata'' is a species of shrub or small tree in the family Rutaceae and is endemic to a restricted area of far north Queensland. It has simple egg-shaped leaves with the narrower end towards the base and white flowers borne singly o ...

'' T.G.Hartley – (Qld.) * '' Medicosma parvifolia'' T.G.Hartley – (New Caledonia) * ''

Medicosma petiolaris ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and e ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma riparia ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and e ...

'' ( P.Royen) T.G.Hartley – (New Guinea) * ''

Medicosma sessiliflora ''Medicosma sessiliflora'' is a species of shrub or small tree in the family Rutaceae and is endemic to far north Queensland. It has simple elliptical to egg-shaped leaves with the narrower end towards the base and cream-coloured flowers borne ...

'' (

C.T.White Cyril Tenison ("C.T.") White (17 August 1890 – 15 August 1950) was an Australian botanist. Early life White was born in Brisbane to Henry White, a trade broker, and Louisa ''nee'' Bailey. He attended school at South Brisbane State School, an ...

) T.G.Hartley – (Qld.) * ''

Medicosma suberosa ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and eig ...

'' T.G.Hartley – (New Caledonia) * '' Medicosma subsessilis'' T.G.Hartley – (New Caledonia) * ''

Medicosma tahafeana ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and e ...

'' T.G.Hartley – (New Caledonia) * ''

Medicosma verticillata ''Medicosma'' is a genus of shrubs and trees in the family Rutaceae, all native to New Guinea, Australia or New Caledonia. They usually have simple leaves arranged in opposite pairs, flowers arranged in cymes with four sepals, four petals and e ...

'' T.G.Hartley – (New Caledonia)

References

External links

* * {{Taxonbar, from=Q6806786 Zanthoxyloideae genera Taxa named by William Jackson Hooker