 Argentine Lignum Vitae (Bulnesia sarmientoi)
|
Common Name(s): Verawood, Argentine Lignum Vitae Scientific Name: Bulnesia arborea, Bulnesia sarmientoi Distribution: Central America and northern South America Tree Size: 40-50 ft (12-15 m) tall, 1-2 ft (.3-.6 m) trunk diameter Average Dried Weight: 81 lbs/ft3 (1,300 kg/m3) Hardness: 4,120 lbf (18,340 N)* *Estimated hardness based on specific gravity Rupture Strength: No data available* Elastic Strength: No data available* Crushing Strength: – lbf/in2 (- MPa) Shrinkage: No data available* *Values are most likely similar to those of Lignum Vitae |
Color/Appearance: Heartwood color can range from a pale yellowish olive, to a deeper forest green or dark brown to almost black. Grain has a unique feathered pattern when viewed up close. The color tends to darken with age, especially upon exposure to light (see light-change color photo below).
Grain/Pore: Verawood has a fine texture and closed pores. Bare wood can be polished to a fine luster due to its high natural oil content. The grain tends to be interlocked and tight.
Endgrain: Diffuse-porous; small pores in wavy radial rows; dark heartwood deposits present; growth rings indistinct; rays not visible without lens; parenchyma vasicentric, and confluent.
Durability: Verawood is reported to be very durable for outdoor use and is said to last nearly indefinitely in direct ground contact; Verawood is also resistant to insect attack.
Workability: Verawood has a tendency to skip over-top jointer cutters on account of its extremely high density, and very light passes are recommended. Verawood will also dull cutters, and overall is considered quite difficult to work. Also, due to its high oil content and hardness, it is very difficult to get a strong and reliable glue joint. However, Verawood is an exceptional wood for turning on the lathe, and finishes well.
Scent: Verawood has a distinct, perfume-like fragrance that lingers even after it has been machined.
Safety: Verawood sawdust has been reported to cause sneezing, and the closely related Lignum Vitae has been reported to cause skin irritation. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.
Price/Availability: Should be priced in the mid to upper range of imported exotic woods. Turning blanks and other small pieces are most commonly available, comparing similarly with other tropical hardwoods such as Cocobolo or Bocote. Larger pieces of lumber are less common but are also available.
Comments: Verawood has very similar appearances and working characteristics to Lignum Vitae, and is sometimes referred to as Argentine Lignum Vitae. Technically Verawood is Bulnesia arborea, and Argentine Lignum Vitae is Bulnesia sarmientoi; though the two woods are so close in appearance and working characteristics that they have been combined on one page for simplicity’s sake. All the scans listed here are from Bulnesia sarmientoi. Though Verawood is in a different Genus than Lignum Vitae, (Bulnesia and Guaiacum, respectively) both genera are biologically classified in the same Family: Zygophyllaceae. Both woods are extremely hard, heavy, oily, and have a feathered grain pattern with a distinct brownish olive color.
Since trade of genuine Lignum Vitae is restricted, (and is included in the CITES Appendix II), Verawood is a popular substitute: yet even this species (Bulnesia sarmientoi) has been included in CITES Appendix III, though it is not as restrictive as Appendix II.
Some common uses for Verawood include: tool handles, mallet heads, bearings, bushings, boatbuilding, pulley wheels, heavy construction (in areas where the tree grows locally), and turned objects.
Zygophyllaceae family:
Scans/Pictures: You can see from the picture in the lower right that the wood is capable of turning a deep, almost forest green. Since there was a sticker above the area with the much lighter yellowish-olive color, it would stand to reason that this dark green color change came about through exposure to light.
A special thanks to Steve Earis for providing turned photo of this wood species.
|
Argentine Lignum Vitae (sanded) |
 Argentine Lignum Vitae (sealed) |
 Argentine Lignum Vitae (endgrain) |
 Argentine Lignum Vitae (endgrain 10x) |
 Argentine Lignum Vitae (quartersawn) |
 Verawood (color changed) |
 Argentine Lignum Vitae (turned) |
August 26th, 2011 at 12:12 pm
http://www.wood-database.com/l...../verawood/
Hi,
Very nice site in deed.
I like the structure and the layout.
Plain information, fast, easy.
Here in Argentina Verawood is pretty much known as “Madera de palo santo” or just “palo santo”.
Maybe worth adding that name.
eg: http://www.ar.all.biz/g24133/
Thanks
hasta luego.
Cornel
November 7th, 2011 at 2:49 pm
I started sneezing within a minute of beginning to sand some verawood. I went ahead and continued, using planes instead… after a while my eyes, sinuses and the skin on my upper cheeks all were burning. It also left a hard crust on the edges of tools, rather like surface rust – not waxy but dry, brittle crust quite stuck to the tool edge, needs scraping off very often.
That said, it is beautiful, hard wood. The herringbone grain is fantastic.