Marupa
Aceituno / Simarouba glauca
Local Names
Cedro Blanco, Simaruba, Soemaroeba, Caixeta, Acajou Blanc, Paraiba, Bitterwood, Cuna, Simarupa
Distribution & Tree
Known alternatively as simarouba, paradise-tree and bitterwood in English, marupa’s ranges extends from Mexico through Central America across much of tropical South America as well as Hispaniola, Puerto Rico, Jamaica, southern Florida, and elsewhere in the Caribbean. It grows well along rivers and streams in well-drained sandy soils, particularly in humid premontane areas transitioning to humid lowlands where its shallow root system is suitable. As an understory species, it tolerates shade. With a cylindrical truck and small, bluish-green crown, marupa reaches an average total height of 39 m with diameters of 70 cm. Its edible but somewhat bland fruit resembles an olive when mature, inspiring its local name.
Wood Appearance
Heartwood is creamy yellow to whitish with a sandy and uniform texture and a straight grain and occasionally figured with narrow vessel lines. Occasionally it has oily streaks. Luster is rather high. The wood has a bitter, quinine-like taste. It’s said to be a substitute for yellow poplar similar in color, strength, hardness and compression properties.
Processing Properties
Marupa is very workable and stable with properties similar to mahogany (in Venezuela it’s known as white cedar). It planes and sands very well, achieving smooth, clean surfaces. It molds and turns well. It paints and varnishes well. Peels, slices and glues well. May split when screwing. Filling is recommended to obtain a good finish. Working properties have been compared to white pine, black gum and basswood.
Strength & Durability
Not durable to termites, dry-wood borers or white rot (highly resistant to brown rot). The wood is easily permeable and amenable to treatment.
Wood Uses
Veneer for plywood, furniture, sounding board for stringed instruments (including guitar tops), piano keys, interior paneling, blockboard, sliced veneer, moulding, turnery, interior joinery and cabinetry. Doors, windows and frames. Shoe platforms/heels, toys and boxes.
Ecological & Social Importance
Its bitter properties are used for a variety of home remedies, including malaria. It’s used as an insecticide to control flies and fleas. Its fatty fruit is an important food for forest animals (in Guatemala the species is sometimes referred to as “jocote de mico”—monkey fruit). The seed’s fat is used for soap manufacture in India, where plantations have been established for its commercial production. The press cake resulting from the milling operation is used as an organic fertilizer and has given good results on coffee, sugarcane, cotton and maize.
Reference Species | ||||
Technical Characteristics | Marupa | American Elm | Loblolly Pine | |
Density | kg/m3 | 420 | 560 | 570 |
Janka Hardness | kgf | 351 | 376 | 313 |
Bending Stiffness (Modulus of Elasticity) | GPa | 8.4 | 9.2 | 12.3 |
Bending Strength (Modulus of Rupture) | MPa | 77.3 | 81.4 | 88.3 |
Crushing Strength | MPa | 35.9 | 38.1 | 49.2 |
Shrinkage, Radial | % | 3.1% | 4.2% | 4.8% |
Shrinkage, Tangential | % | 7.1% | 9.5% | 7.4% |
Shrinkage, Volumetric | % | 9.4% | 14.6% | 12.3% |
T/R Ratio | 2.3 | 2.3 | 1.5 | |
Values determined at 12% humidity - Provided for reference only |
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DENSITY
JANKA HARDNESS
BENDING STIFFNESS
BENDING STRENGTH
CRUSHING STRENGTH
SHRINKAGE
Values are for reference only and cannot be guaranteed. Wood is a natural material and physical and mechanical properties may vary depending on age, genetics, and other factors. We encourage customers to consult the references provided in the bibliography. For further explanations of wood’s key technical characteristics, an excellent resource is the Wood Database with articles on Density (average dried weight); Janka hardness; Elastic Modulus; Rupture Modulus; Crushing Strength; Radial, Tangential and Volumetric Shrinkage.