Achillea millefolium (Yarrow)
Aconitum napellus (Monkshood, Aconite)
Acorus calamus (Sweet flag)
Arctium lappa (Burdock)
Calendula officinalis (Marigold)
Capsicum frutescens (Cayenne, Red pepper)
Caulophyllum thalictroides (Blue cohosh)
Chelidonium majus (Celandine)
Cinnamomum spp. (Cinnamon)
Ephedra sinica (Ma huang)
Inula helenium (Elecampane)
Leonurus cardiaca (Motherwort)
Lobelia inflata (Indian tobacco, Puke weed)
Melaleuca alternifolia (Tea tree)
Nepeta cataria (Catnip)
Sambucus canadensis, nigra (Elder)
Symplocarpus foetida (Skunk cabbage)
Tanacetum parthenium) (Feverfew)
Tilia europaea (Linden flower, Lime blossom)
Verbena officinalis (Vervain)
Zanthoxylum clava-herculis (Southern prickly ash)
Zingiber offiniale (Ginger)

References