The New International Encyclopædia/Bur-Marigold

BUR-MARIGOLD. A popular name of the widely distributed genus Bidens, of the order Compositæ. This genus includes a large number of annuals and perennial plants among which, in America, are the weeds called ‘beggar-ticks,’ ‘Spanish needles,’ and ‘stick-tights.’ Some species have very showy flowers, one of the finest in cultivation being the Bidens grandiflora, a native of South America. The botanic name Bidens is descriptive of the bidentate top of the seed or pappus.