CURUPAY (Piptadenia grata)
Nom commercial
Curupay
Nom scientifique (avec auteur)
Piptadenia grata (Willd.) J.F. Macbr.
Famille
LEGUMINOSAE
Noms communs (pays)
Angico preto (Brazil); Kurupau (Bolivia); Cebil moro (Argentina); Curupay (Argentina); Cebil colorado (Argentina); Angico vermelho (Brazil); Kurupa`y kuru (Paraguay); Kurupay (Paraguay); Kurupayra (Paraguay); Cebil (Argentina); Vilga (Peru); Tarahuilca (Peru); Algarrobo (Peru); Chocolatillo (Colombia); Vilco (Bolivia); Cebil (Bolivia); Curupau (Bolivia); Curupay Negro (Brazil); Dark Angico; Curupay (Brazil); Arapiraca (Brazil); Angico Preto Rajado (Brazil); Angico Preto (Brazil)
Synonymes du nom scientifique (avec auteurs)
Piptadenia macrocarpa Benth.; Anadenanthera macrocarpa (Benth.) Brenan; Anadenanthera macrocarpa (Benth.) Brenan; Anadenanthera colubrina (Vell.) Brenan; Anadenanthera colubrina var. cebil (Griseb.) Reis; Acacia grata Willd.
DESCRIPTION DE L'ARBRE
Description botanique
It is reported to attain a height of 20 to 35 m, with a trunk diameter that can reach up to 100 cm, but more commonly 40 to 70 cm in diameter. Usually the tree develops an irregular stem, with commercial lengths of 15 to 20 m. The seeds are reported to h
Habitat naturel
Piptadenia grata is a fast growing species, typical in secondary forests where it is dominant. It prefers stony or sandy well drained sites. Piptadenia is reported to regrow from the stump.
Répartition naturelle
This species occurs in Brazil, Peru, Bolivia and Paraguay.
Usages non ligneux
The bark of this species is reported to have a high tannin content.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 100 micras or less (very small). Yellow-colored deposits in heartwood vessels. Vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plate Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Non-septate fibers. Fibers very thick walled. Fibers with simple to minutely bordered pits.
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Vue macroscopique du bois (plan tangentiel)
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Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Odeur
It has no distinct odor or taste.
Teinte
The sapwood is yellowish light brown, the heartwood gradually changes into reddish brown.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
The grain is frequently interlocked.
Texture
The wood is frequently reported to be fine textured.
Luster
This species has moderate to high luster.
Durabilité naturelle
P. grata is reported to be very durable, even in contact with the ground.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
1
Résistance à l'imprégnation
It is very difficult to treat with preservatives.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.90
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
1.05
Retrait tangentiel total (saturé à 0%TH) (%)
8.1
Retrait radial total (saturé à 0%TH) (%)
4.9
Défauts dus au séchage
Ease of Drying: Drying is rapid. Drying Defects: Slight cupping but severe tendency to casehardening are reported.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.7
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1890
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
886
OUVRABILITÉ
Sciage
Cutting is rated as difficult when the wood is dry, it is recommended to cut it while green.
Coupe de placage de déroulage
It can be used for decorative veneer.
Placage tranche
It can be used for decorative veneer.
Usinage
Machining operations are rather difficult.
Rabotage
It is difficult to plane.
Moulurage
Molding of this species is reported to be difficult.
Clouage
Nailing properties are poor.
Finissage
It is easy to finish.
Compatibilité avec outils manuels
The wood responds poorly to hand tools.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, crossties, HOUSING GENERAL, beams, boards
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Traverses de chemin de fer
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Planches
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
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