Citronella (genus)
Encyclopedia
Citronella is a genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of tree
Tree
A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...

s and shrub
Shrub
A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...

s in the Cardiopteridaceae
Cardiopteridaceae
Cardiopteridaceae is a eudicot family of flowering plants. It consists of about 43 species of trees, shrubs, and woody vines, mostly of the tropics, but with a few in temperate regions. It contains six genera, the largest of which is Citronella, with 21 species. The other genera are much smaller...

 family, it lies in 25 species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 occurring mostly in tropical climates. Earlier the genus was treated in Icacinaceae
Icacinaceae
Icacinaceae is a family of flowering plants.It consists of trees, shrubs, and lianas, primarily of the tropics.The family was traditionally circumscribed quite broadly, with around 55 genera totalling over 400 species...

 family.

Cultivation and uses

Few species have been cultivated. Citronella mucronata
Citronella mucronata
Citronella mucronata, the Huillipatagua or Chilean citronella tree, is an evergreen tree native to Chile, it occurs from 30 to 41° south latitude. Growing up to 1400 m a.s.l. It is frequently found on moist sites....

from Chile
Chile
Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...

 is remarkable for its hardiness within this genus and it is one of the most known species and has been introduced to Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

.

Selected species

  • Citronella costarricensis (Donn.Sm.) R.A.Howard: Central America
    Central America
    Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

  • Citronella mucronata
    Citronella mucronata
    Citronella mucronata, the Huillipatagua or Chilean citronella tree, is an evergreen tree native to Chile, it occurs from 30 to 41° south latitude. Growing up to 1400 m a.s.l. It is frequently found on moist sites....

    : Chile
    Chile
    Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...

  • Citronella incarum: Peru
    Peru
    Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

  • Citronella moorei
    Citronella moorei
    Citronella moorei is a rainforest tree growing in eastern Australia. Common names for this species include Churnwood, Citronella, Soapy Box, Silky Beech, and Corduroy.- Description :...

    : 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...

     (NSW and Queensland
    Queensland
    Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...

    )
  • Citronella samoensis A.Gray: (endemic Samoa
    Samoa
    Samoa , officially the Independent State of Samoa, formerly known as Western Samoa is a country encompassing the western part of the Samoan Islands in the South Pacific Ocean. It became independent from New Zealand in 1962. The two main islands of Samoa are Upolu and one of the biggest islands in...

    )
  • Citronella vitiensis R.A.Howard
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