Select Language:  


< Back GONçALO-ALVEZ, JOBILLO (Astronium graveolens) Print Friendly View

< Back Print Friendly View

GONçALO-ALVEZ, JOBILLO (Astronium graveolens)

Trade Name

Gonçalo-Alvez, Jobillo

Scientific Name

Astronium graveolens Jacq.



Common Names

Ron Ron; Palo De Culebra; Palo De Cera; Jobillo; Guarita; Gonçalo Alves (Brazil); Gateado; Frijolillo; Ciruelillo; Potrico; Zorro; Zebra Wood; Yomato; Vermelho (Brazil); Ubatin; Tibigaro; Rorón; Quebracho; Quebracha; Hormigo; Locuswood; Jenjiura; Guasango; Urunday; Tiger Wood; Bossona; Bois De Zebre; Urunday-Pará (Brazil); Mura; Zorrowood; Zebrawood; Tigerwood; Brazilian Kingwood; Gonçalo Alves Rajado Branco (Brazil); Guarabu Encirado (Brazil); Guarabu Bata (Brazil); Guarabu Rajado (Brazil); Jejuira (Brazil); Gusanero; Muiraquatiara (Brazil); Yoke; Kingwood

Scientific Name Synonyms

Astronium planchonianum Engl.; Astronium graveolens var. planchoniana Engl.; Astronium graveolens var. inodorum Triana & Planch; Astronium graveolens var. brasiliensis Engl; Astronium fraxinifolium var. glabrum Engl.; Astronium fraxinifolium Schott ex Spreng.

Description Of The Tree

Botanical Description

The trees can reach heights of 40 m, with trunk diameters ranging from 60 to 100 cm or more. They develop well-formed and cylindrical boles clear up to two thirds or more of the height of the tree. This species is reported to present narrow buttresses of

Natural Habitat

Astronium species are found in primary, rarely in secondary, forests. It is also reported in Bolivia, in the humid savanna forests.

Natural Distribution

Central America and northern South America. It is common from Mexico to Bolivia (Beni).

View More Information

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Vessels solitary and in short radial multiples. Tyloses common. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits coarse in marginal rows. Vessel-ray pits larger than the intervessel pits. Occasionally intervess Axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally prismatic crystals in non-chambered axial parenchyma cells. 3 to 4 cells per parenchyma strand. Rays 1 to 4 seriate. Larger rays more than 4 seriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with mostly Septate fibers present. Fibers with simple to minutely bordered pits.

  • Wood Macro Photo Tangential Plane
  • Wood Micro Photo Of Transversal Section


Cites Status


General Wood Description


It has no discernible odor or taste.


The sapwood is clearly demarcated from the heartwood. The heartwood is usually reddish-brown or orange brown, with dark brown streaks, darkening after exposure.

COLOR INDEX (1=Black, 7=Light yellow,white)



Grain varies, it is straight to wavy or interlocked.


Texture is fine to medium.

Natural Durability

It is very durable and it is resistant to wood rotting fungi. It is also resistant to termites and dry-wood insects attacks.

Natural durability index (1= Very high durability, 7=Vey low durability)


Resistance To Impregnation

It is reported to be extremely resistant to preservative treatment.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)


Air-dry Density (Weight and volume at 12%MC) (g/cm³)


Total shrinkage Tangential (Saturated to 0%MC) (%)


Total shrinkage Radial (Saturated to 0%MC) (%)


Drying Defects

Ease of Drying: It is reported to be easy to moderately difficult to air season, drying is rated as moderate to rapid. Drying Defects: Slight warping and checking.

Recommended Dry Kiln Schedule

US-T3-C2; UK-C

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)


Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)


Stiffness (MOE) 12%MC (kgf/cm²)


Compression parallel to fiber 12%MC (kgf/cm²)


Compression perpendicular to fiber 12%MC (kgf/cm²)


Shear strength radial 12%MC (kgf/cm²)


Janka hardness (side) 12%MC (kgf)


Janka hardness (end grain) 12%MC (kgf)




It is a very heavy wood and it requires power for sawing.

Rotary Veneer Cutting

This species is interesting for slicing.

Sliced Veneer

This species is interesting for slicing.

Blunting Effect

Wood of this species produces a moderate blunting effect. Tools reinforced with carbide-tipped blades and cutters are recommended.


Planing operations are difficult, with rough surfaces. Frequently torn grain is reported.




Pre-boring is recommended in nailing.


Special precaution is recommended in gluing because of the extractives content.


The wood is reported to be generally easy to sand.


No grain filling is required to obtain a smooth finish.


The wood can be polished and finished very easily.

Substitute Species

Dalbergia spp.


End Uses Summary

EXTERIOR GENERAL, bridges, paling, rails, crossarms, crossties, HOUSING GENERAL, beams, joists, boards, flooring, frames, steps, panelling, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, TOOLS, tool handles, agricultural tools, PACKING, heavy packing, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boat deck

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
  • 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Paling Fence Pickets
  • 4 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas da bicuiba
  • 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Crossheads Crossarms
  • 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
  • 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
  • 10 - Silica in Timbers
  • 11 - Prospect: The wood database
  • 12 - Tropical timbers of the world. Part I-Tropical American Species
  • 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
  • 14 - Handbook of Hardwoods
  • 16 - Woods of the World
  • 17 - Tree Conservation Database
  • 18 - W3TROPICOS Missouri Botanical Garden
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Common
  • 23 - Handbook of Hardwoods
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Decorative veneer
  • 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
  • 30 - Embassy of Honduras in Japan
  • 31 - Embassy of Colombia in Japan
Turned Articles
  • 32 - Embassy of Cote d`Ivoire in Japan
Knife Handles
  • 33 - Embassy of Gabon in Japan
  • 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
  • 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Heavy Packing
  • 47 - Arvores Brasileiras
Truck Body
  • 53 - Timbers of the New World
Truck Flooring
  • 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
  • 55 - Tropical Timber Atlas of Latin America
Boat Decking
  • 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.

Please Provide Information To View Producer Information

* Or, continue as guest