Mart. ex Tul.
Libidibia ferrea, formerly Caesalpinia ferrea and commonly known as pau ferro, Brazilian ironwood, or leopard tree, is a tree found in Brazil and Bolivia. Its wood is often used for making fingerboards for electric basses and guitars. It has a similar feel and similar tonal attributes to rosewood, but is harder and has a slightly lighter colour. The wood may also be used for flooring, fancy furniture, and handgun grips. It is also known by the names morado, palo santo, caviuna, Brazilian ironwood, and Bolivian rosewood, though it is not actually rosewood.
In guitar making, pau ferro is not only used for fingerboards or bridges but also can be used for the back and sides of the acoustic guitar. The Brazilian guitar maker Giannini uses the wood (laminated) in many of its classical guitars. Although similar in many ways to rosewood, pau ferro has slightly different tonal qualities, with coloration from coffee brown to yellow brown and purple.
Pau ferro, used as a rosewood substitute, is a strong sensitizer capable of causing acute outbreaks of allergic and irritant dermatitis in workers not previously exposed to it. This, however, has not prevented furniture factories from using the product. Apparently, most workers develop tolerance to the wood. The allergen is (R)-3,4-dimethoxydalbergion, a strong skin sensitizer.
- "Caesalpinia ferrea Mart. ex Tul.". Germplasm Resources Information Network (GRIN) online database. Retrieved 12 February 2012.
- classical giannini guitar
- Department of Dermatology, Gentofte Hospital, Hellerup, Denmark
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