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MORA (Mora gonggrijpii)
Trade Name
Mora
Scientific Name
Mora gonggrijpii (Kleinhoonte) Sandwith
Family
LEGUMINOSAE
Common Names
Pracuuba-Vermelha (Brazil); Pracuuba-Da-Várzea (Brazil); Pracuuba-Amarela (Brazil); Pracuuba (Brazil); Praculiba-Branca (Brazil); Moraboekea; Mora bukea; Visgueiro (Brazil); Tamarindo; Royo; Pracuuba (Brazil); Nato Rojo (Colombia); Nato; Mora De Guayana; Mora (Venezuela); Mahot Rouge; Kouatakama; Goma Pashaca; Faveira (Brazil); Morera; Morabukea (Guyana)
Scientific Name Synonyms
Dimorphandra gonggrijpii Kleinhoonte
Description Of The Tree
Botanical Description
The trees are reported to reach heights of 30 to 37 m, with trunk diameters ranging from 60 to 90 cm. They develop well-formed and cylindrical boles that are up to 18 m long, with well developed buttresses, sometimes 4.5 m tall.
Natural Habitat
This gregarious species is reported to be dominant, developing on the lowlands. It is usually found in homogeneous stands called "morales" on swampy areas and gallery forests. It has an abundant natural regeneration.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 150 to 200 micras (medium). Occasionally white deposits in heartwood vessels. Vessels per mm2 5 to 20. Simple perforation plates. Vessel-ray pits similar t Occasionally axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma lozenge-aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
Odor and taste are indistinct.
Color
The pink sapwood is differentiated from the heartwood which is yellowish-red brown or reddish brown, sometimes with dark red fine veins.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The grain is variable, straight to interlocked.
Texture
The texture is moderately fine to medium.
Luster
The wood has medium luster.
Natural Durability
Its resistance to decay is variable. It is very resistant to attack by dry-wood termites, and resistant to dry wood insects.
Natural durability index (1= Very high durability, 7=Vey low durability)
2
Resistance To Impregnation
The wood is reported to be resistant to preservative treatment.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.85
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.98
Total shrinkage Tangential (Saturated to 0%MC) (%)
10.5
Total shrinkage Radial (Saturated to 0%MC) (%)
7.5
Drying Defects
Ease of Drying: It is moderately difficult to air season. Drying Defects: When dried rapidly checking and warping are reported.
Recommended Dry Kiln Schedule
UK-B; US-T2-C2; JUNAC-A
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.4
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1878
Stiffness (MOE) 12%MC (kgf/cm²)
229500
Compression parallel to fiber 12%MC (kgf/cm²)
995
Shear strength radial 12%MC (kgf/cm²)
187
Janka hardness (side) 12%MC (kgf)
1366
Janka hardness (end grain) 12%MC (kgf)
1497
Workability
Sawing
The timber is reported to saw with moderate difficulty but it yields smooth surfaces. There may be considerable pick-up and chipped grain if the material contains interlocked grain.
Rotary Veneer Cutting
It is not suitable for plywood because of its high density.
Sliced Veneer
It is not suitable for plywood because of its high density.
Blunting Effect
It exerts a moderate blunting effect on the cutting elements.
Planing
The timber is reported to plane with moderate difficulty because of interlocked grain. A reduced cutting angle of 20 degrees is recommended.
Turning
30
Nailing
Good nail-holding, pre-boring is necessary.
Gluing
The behavior in gluing is fair.
Sanding
The material is reported to sand with moderate difficulty.
Finishing
This wood yields a smooth surface in finishing.
Steam Bending
Bending properties are reportedly moderate.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, crossties, HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, FURNITURE AND CABINETS, cabinets, TURNING, CONTAINERS, truck bodies, OTHER AND MUSICAL INSTRUMENTS, handicrafts
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Crossties
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
- 10 - Silica in Timbers
Beams
- 11 - Prospect: The wood database
Joists
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Boards
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Flooring
- 14 - Handbook of Hardwoods
Parquet
- 15 - Empire Timbers
Frames
- 16 - Woods of the World
Steps
- 17 - Tree Conservation Database
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Turning
- 30 - Embassy of Honduras in Japan
Truck Body
- 53 - Timbers of the New World
Handcraft
- 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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