bloodroot

1. Any of several plants, such as the bloodroot, whose roots yield a reddish dye. Study on Purification of Sanguinarin and Chelerythrine from Eomecon Chionantha
   紫草属植物如血根草等根部可以提炼红色染料的植物血水草中血根碱和白屈菜红碱的分离制备研究

noun

1. perennial woodland native of North America having a red root and red sap and bearing a solitary lobed leaf and white flower in early spring and having acrid emetic properties

   Synonym:    puccoonredroottetterwortSanguinaria canadensis