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SENNA (Senna siamea)
Nombre comercial
Senna
Nombre científico (con autor)
Senna siamea (Lam.) H.S. Irwin & Barneby
Familia
LEGUMINOSAE
Nombres Comunes
Johar (Sumatra); Khi lek ban (Thailand); Johor (Malaysia); Khi lek (Laos); Angkanh (Cambodia); Thailand shower (Philippines); Juah (Malaysia); Johar (Indonesia); Thai copper pod; Kassod tree; Phak chili (Thailand); Petai belalang (Malaysia)
Nombres científicos sinónimos (con autores)
Sciacassia siamea (Lam.) Britton; Chamaefistula gigantea G. Don; Cassia siamea var. puberula Kurz; Cassia siamea Lam.; Cassia gigantea Bertero ex DC.; Cassia florida Vahl; Cassia arborea Macfad.
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is described as a small to medium sized tree, up to 20 m tall, the bole is usually short, up to 50 cm in diameter.
Hábitat natural
Senna siamea is reported along roadsides and riverbanks. It occurs in different types of lowland forests.
Existencia de plantaciones?
It is planted throughout the tropics, in Vietnam is used for fuel-wood plantations.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Colored deposits in heartwood vessels. Vestured pits. Vessels per mm2 5 to 20. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to interve Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Occasionally two cells per parenchyma strand. 3 to 4 cells per parenchyma strand. Occasionally 5 to 8 cells per parenchyma strand. Axial parenchyma bands more 4 to 10 rays per mm (medium). Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally septate fibers present. Fibers very thick walled. Fibers with simple to minutely bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
Its odor and taste is not distinct.
Color
The sapwood is white, distinct. The heartwood is reddish-brown, dark brown to almost black.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
1
Grano
This species is typically reported to have wavy or interlocked grain.
Veta
This species is reported to have a fine to medium texture.
Brillo
It is reported to be lustrous.
Durabilidad Natural
The heartwood is reported to be resistant to termites.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
2
Contenido de sílice
Silica Content: Silica content is negligible. Silica Value: 0
Dificultad para impregnar
S. siamea wood is permeable to preservative substances.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.63
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.71
Contracción Tangencial Total (Saturado hasta anhidro) (%)
9.4
Contracción Radial Total (Saturado hasta anhidro) (%)
5.6
Defectos por secado
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of distortions.
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.7
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1106
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
121946
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
550
Cizallamiento radial CH12% (kgf/cm²)
107
TRABAJABILIDAD
Maquinado general
This species is difficult to machine.
Cepillado
The wood has a tendency to pick up in planing.
Torneado
30
Acabado
It takes a high finish.
Sacar lustre
Polishing of this wood is easy.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, beams, boards, panelling, FURNITURE AND CABINETS, luxury furniture, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, TOOLS, tool handles, agricultural tools, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts
VIVIENDA GENERAL
- 10 - Silica in Timbers
vigas
- 11 - Prospect: The wood database
Tablas
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Muebles finos
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
Caras
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
chapa decorativa
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Torneado
- 30 - Embassy of Honduras in Japan
HERRAMIENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos herramientas
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Mangos agrícolas
- 44 - Atlas of Peruvian Woods
Carrocería de camión
- 53 - Timbers of the New World
Pisos de vagones_contenedores
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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