PANICUM, in botany, a genus of the triandria digynia class. The calix consists of three valves, the imbric of which is least. There are 28 species, four of which are natives of Britain, viz. the viride, or green panic-grass; the crassifolium, or loose panic-grass; the sanguinale, or cock's-foot panic-grass; and the dactylon, or creeping panic-grass.