bloodroot

noun

1. (uncountable, usually)A North American plant, Sanguinaria canadensis, of the poppy family, which has a red root and sap and a single white flower in early spring.

   ““What on earth did you put in that stuff?” “Bug-bane, barren-wort, penny-cress and blood-root, catchfly, toad-flax, nap-weed and wormwood,” said Catweazle.”