Guaiacum uses, including as lumber, for medicinal purposes, and as ornamentals. The trade of all species of "Guaiacum" is controlled under CITES Appendix II. "Guaiacum officinale" is the national flower of Jamaica, while "Guaiacum sanctum" is the national tree of the Bahamas. The genus is famous as the supplier of lignum vitae, which is the heartwood of several species in the genus. It is the fourth-hardest variety of wood as measured by the Janka hardness test, requiring a force of to embed a steel ball in diameter half that distance into the wood. The Spanish encountered guaiacum wood when they conquered
Carlo Janka February, interrupting accessory electrical pathways to the heart. These unnecessary extra pathways had caused his heart rate to behave abnormally during exercise and stress, posing possibly severe risks. Janka recovered well from the catheterization and resumed training five days later, winning the giant slalom at Kranjska Gora, Slovenia, on 5 March for his sole victory of the 2011 season. Janka switched equipment following the 2014 season, from Atomic to Rossignol. ^ Carlo Janka Carlo Janka (born 15 October 1986) is an alpine ski racer from Switzerland. Born in Obersaxen, in the canton of Graubünden, he had the winter sports facilities