First,
I don't have this, Mom does and I am sorry for her. She has been fighting it for years, and the fight will go on...
Introducing : Bittersweet Nightshade
Invasive runners, water happy, super toxic plant. (All parts are toxic.)
For more delightful info and history see:
Second,
Vinca
Third,
Aspen tree shoots
Fourth,
Barbary bushes