Sentence:  One morning she had me traipsing out at the crack of dawn for prickly poppy, <WSD>toadflax</WSD>, spiderwort, and skeleton weed. If that doesn't sound like the makings of a witch's brew, then I'm the queen of England. 
Meaning of the word marked with <WSD> tags:  Any of several European plants, of the genus "Linaria", having two-lipped yellow flowers.