Common Name(s): Wamara, Guyana Rosewood
Scientific Name: Swartzia spp. (S. benthamiana, S. leiocalycina)
Distribution: Southern Mexico, Central America, and northern South America
Tree Size: 100-130 ft (30-40 m) tall, 2-4 ft (.6-1.2 m) trunk diameter
Average Dried Weight: 67 lbs/ft3 (1,080 kg/m3)
Specific Gravity (Basic, 12% MC): .92, 1.08
Janka Hardness: 3,660 lbf (16,260 N)
Modulus of Rupture: 28,490 lbf/in2 (196.5 MPa)
Elastic Modulus: 3,535,000 lbf/in2 (24.38 GPa)
Crushing Strength: 15,260 lbf/in2 (105.3 MPa)
Shrinkage: Radial: 4.7%, Tangential: 7.6%, Volumetric: 12.3%, T/R Ratio: 1.6
Color/Appearance: Heartwood varies from medium reddish brown to purplish black, frequently with darker contrasting stripes. Sapwood is sharply demarcated and is a pale yellowish white.
Grain/Texture: The grain is usually straight, but can also be irregular or interlocked. With a fine even texture and good natural luster.
Endgrain: Diffuse-porous; large pores in no specific arrangement, very few; solitary and radial multiples of 2-3; heartwood deposits of varying colors commonly present; parenchyma winged, confluent, and banded (sometimes reticulate); narrow rays, fairly close spacing.
Rot Resistance: Varies depending upon species, but generally very durable. Heartwood is usually considered to have a high resistance to decay and termites; though it is susceptible to marine borers.
Workability: Wamara is typically considered difficult to work on account of its high density. The wood has a moderate to high blunting effect on cutters, and if there is interlocked grain present, tearout can occur during planing. Can be troublesome to glue because of its high density and natural oils present.
Odor: Wamara has a very faint odor when being worked.
Pricing/Availability: Usually available in turning squares or as figured lumber (generally with a large amount of sapwood present). Expect prices to be in the mid to upper range for an imported tropical hardwood.
Sustainability: This wood species is not listed in the CITES Appendices or on the IUCN Red List of Threatened Species.
Common Uses: Inlays, fine furniture and cabinetry, parquet flooring, turnings, and other small specialty items.
Comments: Sometimes called Guyana Rosewood for its lustrous, dense, and colorful wood, Wamara technically isn’t a true rosewood (Dalbergia genus), but is in what could arguably be viewed as one of the most under-appreciated genera of tropical hardwoods: Swartzia. This genus is filled with a variety of colorful and striped woods, most of which remain obscure.
Wamara is very closely related to the more widely known hardwood: Katalox (Swartzia cubensis). Both woods possess superb strength properties, though Wamara tends to be more variable in coloration and appearance, frequently sporting dark contrasting stripes.
Scans/Pictures: A special thanks to Justin Holden for providing the wood sample of this wood species.