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MEMPISANG (Platymitra arborea)
Trade Name
Mempisang
Scientific Name
Platymitra arborea (Blanco) Kessler
Family
ANNONACEAE
Common Names
Sapiro (Philippines); Bolon (Philippines); Lanutan (Philippines)
Scientific Name Synonyms
Alphonsea philippinensis Merr; Alphonsea arborea (Blanco) Merr
Description Of The Tree
Botanical Description
It is a medium-sized to fairly large tree up to 40 m tall. The bole is straight, cylindrical, up to 80 cm in diameter, occasionally with buttresses up to 1.5 m high.
Natural Habitat
This species grows scattered in primary lowland rain forests, up to 300 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally tangential diameter of vessel lumina 100 micras or less. Vessels per mm2 5 to 20. Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits small, 7 micras or less. Two cells per parenchyma strand. 3 to 4 cells per parenchyma strand. Axial parenchyma in narrow bands on lines up to 3 cells wide. 4 to 10 rays per mm (medium). Rays less than 4 per mm (rare). Rays of two distinct sizes. Ray height more than 1 mm. Larger rays more than 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with one row Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is yellow-white to yellowish-brown with a slight green tinge, not clearly differentiated from the paler sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
6
Grain
The grain is mostly straight
Texture
Texture is usually moderately fine.
Natural Durability
The wood is non-durable and not resistant to dry-wood termites and fungal attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.67
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.75
Drying Defects
Ease of Drying: Air seasoning is reported to be good. Drying Defects: Risk of slight splitting.
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1406
Stiffness (MOE) 12%MC (kgf/cm²)
167116
Compression parallel to fiber 12%MC (kgf/cm²)
632
Compression perpendicular to fiber 12%MC (kgf/cm²)
122
Shear strength radial 12%MC (kgf/cm²)
127
Janka hardness (side) 12%MC (kgf)
955
Janka hardness (end grain) 12%MC (kgf)
973
Workability
Machining
Machining of this species is reported to be easy.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, FURNITURE AND CABINETS, SPORTS, TOOLS, tool handles, agricultural tools, PACKING, NAVAL CONSTRUCTION, boats, boat oars, OTHER AND MUSICAL INSTRUMENTS, matches
General Housing
- 10 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Agricultural Tools
- 44 - Atlas of Peruvian Woods
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Boat Oars
- 60 - Amazonian Timbers, Characteristics and Utilization Volume II; Curuá-Una Experimental Forest Station
Matches
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
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