Classic naturopathic herbals include Artemisia annua (sweet wormwood), Artemisia tridentata (sagebrush), Allium sativum (garlic), Gentiana lutea (gentian), Mahonia aquifolium (Oregon grape), Zingiber officinalis (ginger), Tanacetum vulgare (tansy), Azadirachta indica (neem), Hydrastis canadensis (goldenseal), Thuja pUcata (western red cedar),
Syzygium aromaticum (clove), juglans nigra (black walnut), Dysphania ambrosioides (formerly Chenopodium ambrosioides; epazote), Ailanthus altissima (Chinese tree of heaven), Quassia amara (quassia), Picrasma excelsa (Jamaican quassia), Uncaria tomentosa (cat's claw), Tabebuia impetiginosa (pau d'arco), Citrus paradisi (grapefruit seed), Cucurbita moschata (pumpkin seed), and Carica papaya (papaya seed).