菟丝子为旋花科 Convolvulaceae,菟丝子亚科 Cuscutoideae,菟丝子属 Cuscuta 植物的总称。本属植物在我国约有八种,在科左后旗仅有两种,即菟丝子 Cuscuta chinensis 和大菟丝子 Cuscuta japonica。虽然种类少,但分布广,为害大,不但是农作物的有害植物,而且也是林木、牧草的有害植物。菟丝子无根 Cuscuta is Convolvulaceae, Cuscutoideae, and Cuscuta. There are about eight species of this genus in China, and there are only two species in Section Zuohou Hou, Cuscuta chinensis and Cuscuta japonica. Although a small number, but widely distributed, harmful to large, not only the harmful plants of crops, but also trees, pasture harmful plants. Dodder rootless