View photos of the medicinal plant, Pedicularis groenlandica (Elephanthead lousewort), profiled in Medicinal Plants of the Western Mountain States.

A passage from Medicinal Plants of the Western Mountain States:

Individuals whom exhibit more muscular tension than usual (this interfering with peaceful sleep) will respond well to the plant. As a bedtime sedative for hyperactive children it will be found more reliable than Valerian with its occasional circulatory stimulation.