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AMAPA (Parahancornia amapa)
Nom commercial
Amapa
Nom scientifique (avec auteur)
Parahancornia amapa (Huber) Ducke
Famille
APOCYNACEAE
Noms communs (pays)
Amapa (Brazil); Amapá-Amargoso (Brazil); Amapá-Amargo (Brazil); Amapá (Brazil)
Synonymes du nom scientifique (avec auteurs)
Hancornia amapa Huber
DESCRIPTION DE L'ARBRE
Description botanique
It is a tall tree, sometimes over 35 m long, with diameters occasionally up to 90 cm. This tree is used as a source of medicine, and it is a minor source of gutta percha. It presents abundant latex.
Habitat naturel
Parahancornia amapa is reported to grow in humid sites of terra firme forests, always close to rivers and streams.
Répartition naturelle
It is found in the Amazon basin. In Brazil it is reported in Manaus and Para states.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 100 to 150 micras (small). Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Inte Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays commonly 2 seriate. Prismatic crystals in radial alignment in procumbent ray cells (chambered cells). Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with distinctly bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The color of the heartwood is usually cream white to light brown.
Grain
The grain is straight.
Texture
The wood has a fine texture.
Durabilité naturelle
Natural durability of P. amapa is reported to be poor, it can be attacked by fungi, termites and dry wood insects.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
Résistance à l'imprégnation
Heartwood is considered to be moderately difficult to preserve.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.57
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.63
Retrait tangentiel total (saturé à 0%TH) (%)
8.1
Retrait radial total (saturé à 0%TH) (%)
4.6
Défauts dus au séchage
Ease of Drying: It is difficult to air season. Drying Defects: When dried at a fast to moderate rate it develops moderate crook and surface checking. Risk of casehardening in thick pieces. Kiln Schedules: This species must be dried slowly.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.8
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
723
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
108014
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
448
OUVRABILITÉ
Sciage
Wood of this species is easy to cut.
Coupe de placage de déroulage
This species is interesting for peeling.
Placage tranche
This species is interesting for peeling.
Effet d'émoussement
It is considered to have a slight blunting effect on the cutting elements.
Usinage
This species is easy to machine.
Rabotage
It is easy to plane.
Clouage
It has a mediocre holding of nails.
Collage
This species is easy to glue.
Finissage
It is easy to finish.
Polissage
Polishing of this species is reportedly easy.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, boards, panelling, fittings, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, cores, common veneer, PACKING, light packing, OTHER AND MUSICAL INSTRUMENTS, handicrafts, matches, moldings
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
Panneaux
- 18 - W3TROPICOS Missouri Botanical Garden
Accessoires en bois
- 19 - Silica in Timbers
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Meubles ordinaire
- 23 - Handbook of Hardwoods
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
âmes (de placage)
- 27 - Embassy of Brazil in Japan
Placage ordinaire
- 29 - Embassy of Ecuador in Japan
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Embal_léger
- 46 - ECUADOR, Inventario y Aprovechamiento de los Bosques del Sur Ecuatoriano
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Allumette
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Moulures
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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