Bolsa de Madrid 9 a.m. to 5:30 p.m.; open outcry from 10a.m. to 11:30 a.m., both Monday through Friday The "Bolsa de Madrid" was officially founded in 1831. In 1993, the Bolsa de Madrid switched to all-electronic trading for fixed-income securities. As required by Spanish law, it is managed and operated by the "Sociedad Rectora de la Bolsa de Valores de Madrid S.A.," a corporation organized under the laws of the Kingdom of Spain. The membership of the Madrid Stock Exchange consists of 41 major financial institutions and 12 established securities dealers. At December 31, 2001, approximately 1477 domestic and foreign companies had
Dioscorea mexicana Dioscorea mexicana Dioscorea mexicana, Mexican yam or cabeza de negro is a species of yam in the genus "Dioscorea". "Dioscorea mexicana" is a caudiciform dioscorea having either a partly to completely above-ground dome-shaped caudex with a thick, woody outer layer up to 3 feet (90 cm) in diameter and 8–10 inches (20 to 25 cm) in height. The caudex of "D. mexicana" is divided into regular polygonal plates that become protuberant with age, and separated by deep fissures. The vigorous annual vines which may reach 30 feet (9 m) long before dying back in winter, that grow up from the