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''Dalbergia nigra'', commonly known as the Bahia rosewood, jacarandá-da-Bahia, Brazilian rosewood, Rio rosewood, jacarandá-do-brasil, pianowood, caviúna, graúna, jacarandá-una or obuina is a species of legume in the family
Fabaceae The Fabaceae or Leguminosae,International Code of Nomenc ...
.


Description

''Dalbergia nigra'' produces a very hard and heavy wood, characteristically varied in colour from brick red through various shades of brown (medium to nearly black). Pieces that feature veins of black colouration called ''spider webbing'' or ''landscape grain'' are especially prized. Another distinguishing feature is its outstanding resonance. An evenly cut piece that is tapped emits a bright metallic ring that sustains. This property, combined with its beauty, has made Brazilian rosewood a favourite of musical instrument makers for centuries. Brazilian rosewood is highly resistant to insect attacks. There are many species in 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. T ...
'' that can be confused with ''Dalbergia nigra'', but the latter can be recognised by its colour and
resin In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on natu ...
.Amendments to Appendices I and II of The Convention - Other Proposals
CITES. March 1992.
It may also be confused with '' Machaerium'', which has a more compact
parenchyma Parenchyma () is the bulk of functional substance in an animal organ or structure such as a tumour. In zoology it is the name for the tissue that fills the interior of flatworms. Etymology The term ''parenchyma'' is New Latin from the word π ...
and lack large pores. Very little is known about the ecology and reproduction of the Brazilian rosewood.ARKive on Brazilian Rosewood


Former uses

The wood of this species has been much sought after since it was first introduced to the European and subsequently the world market, hundreds of years ago. ''Dalbergia nigra'' became popular in high grade furniture, such as that produced during the
Regency period The Regency era of British history officially spanned the years 1811 to 1820, though the term is commonly applied to the longer period between and 1837. King George III succumbed to mental illness in late 1810 and, by the Regency Act 1811, h ...
of late 18th and early 19th centuries—and more recently by
Scandinavia Scandinavia; Sámi languages: /. ( ) is a subregion#Europe, subregion in Northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. In English usage, ''Scandinavia'' most commonly refers to Denmark, ...
n makers, who produced furniture in the
Danish Modern Danish modern is a style of minimalist furniture and housewares from Denmark associated with the Danish design movement. In the 1920s, Kaare Klint embraced the principles of Bauhaus modernism in furniture design, creating clean, pure lines based ...
style. This species has also been used in various musical instruments, decorative wood-ware, knife handles and
turnery Woodturning is the craft of using a wood lathe with hand-held tools to cut a shape that is symmetrical around the axis of rotation. Like the potter's wheel, the wood lathe is a simple mechanism that can generate a variety of forms. The operator ...
. Much of the most highly figured material was sliced into veneers, which decorated items such as domestic and office furniture, wall panels, and piano cases; it was also a favourite of
marquetry Marquetry (also spelled as marqueterie; from the French ''marqueter'', to variegate) is the art and craft of applying pieces of veneer to a structure to form decorative patterns, designs or pictures. The technique may be applied to case furn ...
artists. Old growth Brazilian rosewood remains highly prized by classical and steel string guitar makers, who regard it as perhaps the best sounding wood for guitar backs and sides. It was used in instruments as long ago as the late
Renaissance The Renaissance ( , ) , from , with the same meanings. is a period in European history marking the transition from the Middle Ages to modernity and covering the 15th and 16th centuries, characterized by an effort to revive and surpass ideas ...
and
Baroque The Baroque (, ; ) is a style of architecture, music, dance, painting, sculpture, poetry, and other arts that flourished in Europe from the early 17th century until the 1750s. In the territories of the Spanish and Portuguese empires including t ...
eras, when luthiers used it for
lute A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted. More specifically, the term "lute" can ref ...
backs (ribs) and various parts of other stringed musical instruments. It was also used in woodwind instruments, such as
bassoon The bassoon is a woodwind instrument in the double reed family, which plays in the tenor and bass ranges. It is composed of six pieces, and is usually made of wood. It is known for its distinctive tone color, wide range, versatility, and virtuo ...
s,
flute The flute is a family of classical music instrument in the woodwind group. Like all woodwinds, flutes are aerophones, meaning they make sound by vibrating a column of air. However, unlike woodwind instruments with reeds, a flute is a reedless ...
s, and recorders.


Habitat and distribution

''Dalbergia nigra'' is
endemic Endemism is the state of a species being found 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 found elsew ...
to
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 ...
, and native to the Bahia interior forests ecoregion.Dalbergia nigra
The IUCN Red List of Threatened Species.
It is endemic to the
Atlantic Forest The Atlantic Forest ( pt, Mata Atlântica) is a South American forest that extends along the Atlantic coast of Brazil from Rio Grande do Norte state in the northeast to Rio Grande do Sul state in the south and inland as far as Paraguay and th ...
biome of
southeastern Brazil The Southeast Region of Brazil ( pt, Região Sudeste do Brasil; ) is composed of the states of Espírito Santo, Minas Gerais, Rio de Janeiro (state), Rio de Janeiro and São Paulo State, São Paulo. It is the richest region of the country, responsi ...
, and only found in southern
Bahia Bahia ( , , ; meaning "bay") is one of the 26 Federative units of Brazil, states of Brazil, located in the Northeast Region, Brazil, Northeast Region of the country. It is the fourth-largest Brazilian state by population (after São Paulo (sta ...
,
Espírito Santo Espírito Santo (, , ; ) is a state in southeastern Brazil. Its capital is Vitória, and its largest city is Serra. With an extensive coastline, the state hosts some of the country's main ports, and its beaches are significant tourist attra ...
,
Minas Gerais Minas Gerais () is a state in Southeastern Brazil. It ranks as the second most populous, the third by gross domestic product (GDP), and the fourth largest by area in the country. The state's capital and largest city, Belo Horizonte (literally ...
, and
Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...
states. It needs a
habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...
of wet and damp forest on rich soils to thrive.


Conservational status

''Dalbergia nigra'' is listed as vulnerable on the international
IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...
. The trees' regeneration rates among existing populations are poor, possibly because the seeds of the few remaining fruiting trees are heavily predated by rodents. In addition it is threatened by
habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...
, since most of the plant's forest habitats have been converted to farmland. Due to its endangered status, it was
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 ...
-listed on June 11, 1992, in Appendix I (the most protected), and trade in it is restricted.How CITES works
/ref>


References


Sources



{{Taxonbar, from=Q1076881 nigra Endemic flora of Brazil Flora of the Atlantic Forest Trees of Brazil Flora of Bahia Flora of Espírito Santo Flora of Minas Gerais Flora of Rio de Janeiro (state) Environment of Sergipe Vulnerable flora of South America Taxonomy articles created by Polbot