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YVYRARO (Pterogyne nitens)
Trade Name
Yvyraro
Scientific Name
Pterogyne nitens Tul.
Family
LEGUMINOSAE
Common Names
Vivaró; Pau Fava (Brazil); Ibiráro; Ibiraró; Ibiraro; Guiáro; Guiaro; Tapia Colorado; Viraro; Palo Rosa; Palo Amargo; Ibiróro; Ibyraro; Ebiraro; Amendoim (Brazil)
Description Of The Tree
Botanical Description
Tree size attains a height of about 20 to 35 m, with a trunk diameter of 60 to 95 cm. It is reported to develop a cylindrical but irregular stem, with commercial lengths of 7 to 15 m.
Natural Habitat
Pterogyne nitens grows within an area of seasonally dry subtropical forests. It is a pioneer species found in secondary forests on sandy, well drained sites in open areas. It is known or inferred that the harvesting of specimens from the wild for internat
Natural Distribution
It is found from northern Argentina up to Brazil, Paraguay and Bolivia.
Non Timber Uses
The sawdust of this species is sometimes used as a source of purple color.
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 10 to 20 (abundant). Simple perforation plates. Vessel-ray pi Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally axial parenchyma lozenge-aliform. Occasionally axial parenchyma confluent. Axial parenchyma storied. Prismatic crystals in non-ch 4 to 10 rays per mm (medium). Rays storied. Rays 1 to 4 seriate. Prismatic crystals in radial alignment in procumbent ray cells (chambered cells). Prismatic crystals in the ray cells. 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
P. nitens is reported to have a pleasant smell.
Color
The pink sapwood is slightly differentiated from the heartwood which is reddish yellow.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The grain is mostly interlocked.
Texture
The wood is mostly medium in texture.
Luster
This species is high in luster.
Natural Durability
This species is reported as durable, especially when it is not in contact with the ground.
Natural durability index (1= Very high durability, 7=Vey low durability)
2
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.69
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.77
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.5
Total shrinkage Radial (Saturated to 0%MC) (%)
3.5
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.9
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1187
Compression parallel to fiber 12%MC (kgf/cm²)
540
Workability
Sawing
Wood of this species is easy to cut.
Machining
Machining operations are reported to be relatively easy, allowing a good surface finishing.
Turning
30
Finishing
Finishing of this species is reportedly easy.
Steam Bending
It has a moderate response to steam bending.
Substitute Species
This timber is reported to be similar to Mahogany (Swietenia macrophylla).
REFERENCED USES
End Uses Summary
HOUSING GENERAL, beams, joists, boards, flooring, frames, steps, panelling, FURNITURE AND CABINETS, luxury furniture, TURNING, cutlery, BENDING, CONTAINERS, cooperage, truck bodies, truck flooring
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
Frames
- 16 - Woods of the World
Steps
- 17 - Tree Conservation Database
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Luxury
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Turning
- 30 - Embassy of Honduras in Japan
Knife Handles
- 33 - Embassy of Gabon in Japan
Bending
- 35 - Embassy of Myanmar in Japan
Containers
- 50 - Properties of imported tropical woods
Cooperage
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Truck Body
- 53 - Timbers of the New World
Truck Flooring
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
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