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 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 right in front of his home. Janka has won gold medals at both the Winter Olympics and the World Championships, as well as one World Cup overall title, one discipline title and also, one unofficial alpine combined title. In 2013, Janka set a World Cup speed record in the downhill part of the super combined event in Wengen, Switzerland. He reached a maximum speed of on the "Haneggschuss", the fastest section