View photos of the medicinal plant Pedicularis centranthera (Dwarf lousewort), profiled in Medicinal Plants of the Western Mountain States (as Pedicularis spp.).

A passage from Medicinal Plants of the Western Mountain States:

Pedicularis is known to be parasitic in varying degrees to other plants in its proximity. Be cautious about its collection if found growing intermingled with Senecio, Helenium/Hymenoxys, Thermopsis (Lupinus too), or other toxic plants.