''Aniba rosaeodora'', also known as pau-rosa, is a species of

Magnoliid Magnoliids (or Magnoliidae or Magnolianae) are a clade of flowering plants. With more than 10,000 species, including magnolias, nutmeg, bay laurel, cinnamon, avocado, black pepper, tulip tree and many others, it is the third-largest group of angio ...

tree in the family

Lauraceae Lauraceae, or the laurels, is a plant family that includes the true laurel and its closest relatives. This family comprises about 2850 known species in about 45 genera worldwide (Christenhusz & Byng 2016 ). They are dicotyledons, and occur m ...

. Although sometimes wrongly referred to as ''rosewood'' this name is totally misleading; it is no tree of the genus ''

Dalbergia ''Dalbergia'' is a large genus of small to medium-size trees, shrubs and lianas in the pea family, Fabaceae, subfamily Faboideae. It was recently assigned to the informal monophyletic ''Dalbergia'' clade (or tribe): the Dalbergieae. Th ...

''. It grows in parts of the

tropical rainforest Tropical rainforests are rainforests that occur in areas of tropical rainforest climate in which there is no dry season – all months have an average precipitation of at least 60 mm – and may also be referred to as ''lowland equatori ...

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the souther ...

. It is an endangered species that sees exploitation for its essential oil.

Description

''Aniba rosodora'' grows in the

s of

. It is found in the

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

ian states of

Amapá Amapá () is one of the 26 states of Brazil. It is in the northern region of Brazil. It is the second least populous state and the eighteenth largest by area. Located in the far northern part of the country, Amapá is bordered clockwise by Fr ...

, Amazonas, and

Pará Pará is a state of Brazil, located in northern Brazil and traversed by the lower Amazon River. It borders the Brazilian states of Amapá, Maranhão, Tocantins, Mato Grosso, Amazonas and Roraima. To the northwest are the borders of Guyana a ...

. It is also found in Colombia,

Ecuador Ecuador ( ; ; Quechuan languages, Quechua: ''Ikwayur''; Shuar language, Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechuan ...

, Guyana,

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north ...

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in ...

, and

French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas departments and regions of France, overseas department/region and single territorial collectivity of France on the northern Atlantic ...

, where it was formerly more widespread. It is massive, up to 30 meters in height and 2 meters in diameter, and

evergreen In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, which ...

. The entire tree is fragrant. Substances in the tree include

linalool Linalool () refers to two enantiomers of a naturally occurring terpene alcohol found in many flowers and spice plants. Linalool has multiple commercial applications, the majority of which are based on its pleasant scent (floral, with a touch o ...

and rubranine. The flowers are perfect, with temporal

dioecy Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproductio ...

. The fruit is a purple

drupe In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part ( exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pit'', ''stone'', or '' pyrena'') of hardened endocarp with a seed (''kerne ...

dispersed by

toucan Toucans (, ) are members of the Neotropical near passerine bird family Ramphastidae. The Ramphastidae are most closely related to the American barbets. They are brightly marked and have large, often colorful bills. The family includes five ...

s. It has 24 chromosomes.

Gene flow In population genetics, gene flow (also known as gene migration or geneflow and allele flow) is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalen ...

is high between wild populations.

Uses

The plant is one of the commercially important sources of

rosewood oil Rosewood oil is a valuable essential oil, especially in perfumery. It contains the substance linalool, which has a number of uses. The oil is extracted from the wood of '' Aniba rosaeodora'' and '' Aniba parviflora'' and possibly other '' Aniba' ...

. The tree is collected in the wild. After felling, the trees are cut into one–meter long logs which are taken to the riverbank and stockpiled there. When river levels are high enough, the logs are floated downriver to a distillery. Because of the remoteness and difficulty of travel in the Amazon, distilleries are often mobile, movable by raft. When they arrive at the distillery, the logs are chipped and then steam distilled. Each tree yields about 1% oil by weight of wood. Most worldwide production comes from Brazil; since the 1960s, other areas produce only a minor, insignificant amount. Trees are taken from near the

Amazon Amazon most often refers to: * Amazons, a tribe of female warriors in Greek mythology * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon River, in South America * Amazon (company), an American multinational technolog ...

and its tributaries. The

wood Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of ligni ...

may also be utilized by the

indigenous people Indigenous peoples are culturally distinct ethnic groups whose members are directly descended from the earliest known inhabitants of a particular geographic region and, to some extent, maintain the language and culture of those original people ...

s of the Amazon basin for the purposes of making canoes, but this is a minor use. In addition, old chips are used as fuel to run the distilleries. The Aniba rosodora is known as Pau-Rosa in Brazil. The supply of this wood was greatly overused in the past and it now is as difficult to legally trade as elephant ivory.

Conservation

''Aniba rosodora'' is an endangered species. Populations have declined rapidly due to the destructive harvesting methods. Areas previously logged have not seen much regrowth. It might even be critically endangered. Wild populations exist in remote locations, which are hence unlikely to be exploited. The

Brazilian government The politics of Brazil take place in a framework of a federal presidential representative democratic republic, whereby the President is both head of state and head of government, and of a multi-party system. The political and administrative ...

has enacted regulations to help conserve the species. There have been difficulties with enforcement. Early experiments in artificial cultivation and propagation were failures. More recent attempts have been more successful. It, or rather its wood and essential oil, is on Appendix II of

CITES CITES (shorter name for the Convention on International Trade in Endangered Species of Wild Fauna and Flora, also known as the Washington Convention) is a multilateral treaty to protect endangered plants and animals from the threats of interna ...

. If the leaves could be used as a source, it would help conserve the species. It has been suggested that production methods be altered to ensure a

sustainable Specific definitions of sustainability are difficult to agree on and have varied in the literature and over time. The concept of sustainability can be used to guide decisions at the global, national, and individual levels (e.g. sustainable livin ...

supply. It is also listed on the

Official list of endangered flora of Brazil This is a partial list of the endangered flora of Brazil as listed under an act published in Portaria 37-N de 3 de abril de 1992 (Act No 37-N on April 3, 1992) by IBAMA. Categories Species are classified in four groups, set through criteria s ...

References

{{Taxonbar, from=Q2235214 rosodora Trees of South America Endangered plants Trees of Brazil Trees of Colombia Trees of Ecuador Trees of French Guiana Trees of Guyana Trees of Peru Trees of Suriname Trees of Venezuela Taxonomy articles created by Polbot Taxa named by Adolpho Ducke

Description

Uses

Conservation

See also

References