This is an interesting herb with many historical associations and uses, including the ability to be steeped as a tealike beverage.
As one of its historical uses was as a vermifuge, however, its use as a tea should be limited, and it should not be used at all when expecting.
I'm wondering if anyone else has grown this? I planted one plant in a rather wild part of my garden several years ago, and think I will go on a hunt for it when it gets warmer to see if it has survived.
An interesting botanical characteristic is its practice of parasitizing the roots of other plants to increase its access to soil moisture and nutrients.
Some still claim it is mildly useful in cases of anxiety, colds and sinus afflictions, etc.
Here is a link that might be useful: USDA--Forest Service