Achillea millefolium (Yarrow)
Arctium lappa (Burdock)
Baptisia tintoria (Wild indigo)
Berberis vulgaris (Barberry)
Calendula officinalis (Marigold)
Chelidonium majus (Celandine)
Chionanthus virginicus (Fringe tree)
Curcuma longa (Tumeric)
Cynara scolymus (Artichoke)
Gentiana lutea (Gentian)
Lavendula angustifolia (Lavender)
Mentha piperita (Peppermint)
Rheum officinalis (Rhubarb)
Rosmarius officinalis (Rosemary)
Sanguinaria canadensia (Blood root)
Schisandra chinensis (Wu wei zi)
Stillingia sylvatica (Queen's root)
Taraxacum officinale (Dandelion, Lion's tooth)
Verbena officinalis (Vervain)

References