HAWK-WEEED; a genus of the polygamia aequalis order, belonging to the syngenesia clas of plants. There are 14 species, most of them herbaceous annuals, rising to the height of a foot, or a foot and a half; and having their branches terminated by ligulated compound red and yellow flowers. These are very large, and consist of many flat florets spread over one another imbricated, and when fully blown appear as if radiated. They are very conspicuous and beautiful; and appear in June, July, and August. They are succeeded by plenty of seed, which, if permitted to scatter on the ground, will produce a number of young plants without further trouble.