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
Janka Kulcsár Janka Kulcsár Janka Kulcsár (born 8 April 1985) is a Hungarian pianist and répétiteur, and a founding member of the Moltopera Company. Janka Kulcsár was born on 8 April 1985 in Budapest. Kulcsár entered the Béla Bartók Conservatory at the age of fourteen. She participated frequently in summer courses during this period, like the International Music Camp in Balassagyarmat. At the age of eighteen she had already been a student of the Franz Liszt Academy of Music, coached by Lehel Both, at the age of twenty she won the 1st prize of the National Piano Competition for University Students. In