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Lignum vitae is hard and durable, and is also the densest wood traded (average dried density: ~79 lb/ft 3 or ~1,260 kg/m 3); [4] it will easily sink in water. On the Janka scale of hardness, which measures hardness of woods, lignum vitae ranks highest of the trade woods, with a Janka hardness of 4,390 lbf (compared with Olneya at 3,260 lbf, [5] African blackwood at 2,940 lbf, hickory at 1,820 ...
The invention of the use of Guaiacum for syphilis. The genus is famous as the supplier of lignum vitae, which is the wood of several species in the genus. [citation needed] It is the fourth-hardest variety of wood as measured by the Janka hardness test, requiring a force of 4,500 lb f (20,000 N) to embed a steel ball 0.444 in (1.13 cm) in diameter half that distance into the wood.
Guaiacum sanctum, commonly known as holywood, lignum vitae [4] or holywood lignum-vitae, is a species of flowering plant in the creosote bush family, Zygophyllaceae. It is native to the Neotropical realm , from Mexico through Central America , Florida in the United States , the Caribbean , and northern South America . [ 5 ]
The Janka hardness test results tabulated below followed ASTM D 1037-12 testing methods. Lumber stocks tested range from 1" to 2" (25–50 mm) thick. The tabulated Janka hardness numbers are an average. There is a standard deviation associated with each species, but these values are not given. [citation needed] No testing was done on actual ...
Sophora howinsula, commonly known as lignum vitae or Lord Howe kowhai, is a flowering plant in the legume family. The specific epithet refers to the island to which the species is endemic. [ 1 ]
Guaiacum officinale is one of two species yielding the true lignum vitae, the other being Guaiacum sanctum.Guaiac, a natural resin extracted from the wood, is a colorless compound that turns blue when placed in contact with substances that have peroxidase activity and then are exposed to hydrogen peroxide.
Lignum vitae. Guaiacwood (Guaiacum officinale) Holywood (Guaiacum sanctum) Takian (Hopea odorata) Black ironwood (Krugiodendron ferreum) Black ironwood, olive (Olea spp.) Lebombo ironwood Androstachys johnsonii; Catalina ironwood (Lyonothamnus floribundus) Ceylon ironwood (Mesua ferrea) Desert ironwood (Olneya tesota) Persian ironwood (Parrotia ...
Texas lignum-vitae is a many branched shrub or small tree, ... the wood of G. angustifolium has extreme hardness and density and will sink in water.
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