North America · Herb · № 158
American skullcap
Scutellaria lateriflora (en S. baicalensis)
Used in Western herbalism for nervousness, tension and sleep problems. A few small studies suggest a mild calming effect.
Tradition in North America
Thousands of years; different for each people and place

North America is home to hundreds of Indigenous peoples, each with their own language, culture and knowledge of plants and healing. That knowledge is thousands of years old and was passed on mainly orally and through ceremony.
Europeans learned a great deal from Indigenous healers. A well-known example is the winter of 1535 to 1536, when Jacques Cartier’s crew suffered from scurvy near present-day Quebec. They were cured with an infusion of a tree, the annedda, probably the eastern white cedar, on the advice of Domagaya, a son of the Iroquoian chief Donnacona.
At the same time Indigenous traditions were heavily suppressed. In the United States the Code of Indian Offenses of 1883 banned many ceremonies. In Canada the potlatch was banned from 1884 to 1951. Only in 1978 did the American Indian Religious Freedom Act protect the right of Native Americans to practise their religion, including ceremonies and sacred plants.
There is no single Indigenous medicine, but many peoples share the idea that health is balance between body, mind, community and nature. The English word medicine often has a broader meaning in Indigenous traditions: it is also about spiritual power and protection.
Among many peoples, such as the Anishinaabe and the peoples of the Prairies, there are four sacred medicines: tobacco, sage, sweetgrass and cedar. They are burned to cleanse, to pray and to protect.
The sweat lodge is, for many peoples, a ceremony of purification and prayer. The medicine wheel, with its four directions, is an important symbol for some peoples too, but not for all.
Healers are often called medicine men or medicine women. They usually learn for years from an experienced healer, and their role is recognised by the community.
Among the Anishinaabe there is the Midewiwin, the Grand Medicine Society, with several degrees of initiation. Knowledge is passed on there through ceremonies, songs and birchbark scrolls.
Much knowledge is sacred or meant only for initiates. Not everything is meant to be shared with outsiders.
The knowledge is mainly oral. What has been written down often comes from outsiders. A major reference work is Daniel Moerman’s Native American Ethnobotany of 1998, with thousands of plants and uses among hundreds of peoples.
The Midewiwin keep knowledge on wiigwaasabakoon, birchbark scrolls with symbols.
The National Library of Medicine in the United States created the exhibition Native Voices, in which Indigenous people themselves speak about health and healing.
Indigenous medicine is experiencing a revival. Some hospitals and clinics, for instance within the Indian Health Service in the United States and in Canada, offer traditional healing alongside Western care.
Many plants from Indigenous knowledge have become known worldwide, such as echinacea, goldenseal and black cohosh.
There are concerns too. Popular plants are overharvested in the wild, and Indigenous ceremonies are sometimes adopted or sold without respect.
The plant knowledge is enormous. Echinacea was used by Prairie peoples for snakebites, toothache and infections. The bark of wild cherry and of slippery elm served for coughs and sore throats.
Goldenseal was used by the Cherokee and other peoples for inflammation. Black cohosh for women’s complaints. Bloodroot gave a red dye and was used as a remedy.
White sage (Salvia apiana) grows in California and is burned in ceremonies by the Indigenous peoples there.
Indigenous knowledge belongs to Indigenous peoples. Ceremonies such as the sweat lodge do not belong in a wellness centre.
Because of the demand for “smudge sticks”, white sage is overharvested in the wild, which affects Indigenous peoples in California. Prefer other herbs. Goldenseal is also threatened by overharvesting.
From the kitchen
Registry
North America · Herb · № 158
Scutellaria lateriflora (en S. baicalensis)
Used in Western herbalism for nervousness, tension and sleep problems. A few small studies suggest a mild calming effect.
North America · Herb · № 160
Panax quinquefolius
Chinese medicine regards it as more 'cooling' than Asian ginseng and uses it for fatigue and thirst. Some studies find a slight effect on post-meal blood sugar and colds; evidence is limited.
North America · Herb · № 593
Lysichiton americanus
Traditionally attributed effects: strengthens the nerves, stimulating, antispasmodic, induces sweating, expectorant; opens the lungs and reduces cough and bronchial spasms (acute asthma), ointment against ringworm, relieves muscle and joint pain.
North America · Herb · № 574
Populus balsamifera
Traditionally attributed effects: buds: stimulating, tonic, diuretic, soothing, expectorant; bark: expectorant, laxative; for skin problems (eczema, psoriasis), dry cough, constipation, kidney/bladder support, rheumatism and gout.
North America · Herb · № 573
Abies balsamea
Traditionally attributed effects: stimulating, antiseptic, pain-relieving; for respiratory infections, cough and sore throat, cystitis and enteritis, aid to quitting smoking; externally for burns, wounds, haemorrhoids, muscle pain.
North America · Herb · № 224
Monarda didyma
The fragrant leaf contains thymol and is drunk as tea. Indigenous peoples used it for colds, fever and headache; studies in humans are lacking.
North America · Food · № 254
Vaccinium spp.
A fibre-rich berry with plenty of anthocyanins. Observational research links eating berries to a healthy diet; a medicinal effect has not been shown.
North America · Herb · № 281
Iris versicolor
Traditionally attributed effects: anti-inflammatory, diuretic, stimulating, laxative.
North America · Herb · № 280
Caulophyllum thalictroides
Traditionally attributed effects: tonic, antispasmodic, anti-inflammatory, stimulates the uterus, diuretic, antirheumatic.
North America · Herb · № 372
Sanguinaria canadensis
Traditionally attributed effects: stimulating, emetic, expectorant, restorative; part of escharotic treatment for cervical dysplasia, warms lungs/stomach/uterus, promotes coughing up.
North America · Herb · № 151
Eupatorium perfoliatum
Traditionally used for fever and flu with aching muscles; the name refers to 'break-bone fever'. There is hardly any modern clinical research.
North America · Herb · № 306
Hydrangea arborescens
Traditionally attributed effects: diuretic, laxative, stimulates the kidneys.
North America · Herb · № 34
Hydrastis canadensis
There is not enough evidence to determine whether goldenseal helps any health condition.
North America · Herb · № 582
Solidago canadensis
Traditionally attributed effects: astringent, antiseptic, anti-inflammatory, wound-healing; heals the bladder wall (incontinence, irritation), for allergies and stuck mucus after a cold, eyewash for hay fever.
North America · Herb · № 288
Frangula purshiana (syn. Rhamnus purshiana)
Traditionally attributed effects: laxative, digestive tonic.
Asia · Herb · № 766
Rosa laevigata
Traditionally attributed effects: holds in the essence and curbs diarrhoea and frequent urination.
North America · Food · № 13
Vaccinium macrocarpon
A food berry. Products may help lower recurrent UTI risk for some women, but findings are mixed; it does not treat an existing UTI.
North America · Herb · № 14
Echinacea purpurea
Studied for colds and respiratory infections. It may slightly reduce the chance of catching a cold; effects on duration and other conditions are uncertain.
North America · Herb · № 188
Acer spp.
Maple syrup is the boiled-down sap of the sugar maple. It consists mainly of sugar and some minerals, such as manganese; it is a sweetener, not a medicine.
Europe · Herb · № 104
Viburnum opulus en V. prunifolium
The bark is traditionally used for muscle cramps and period pain; its English name is cramp bark. Clinical evidence is lacking.
North America · Herb · № 327
Rhus aromatica
Traditionally attributed effects: astringent, tonic, antidiabetic, diuretic.
North America · Herb · № 274
Geranium maculatum
Traditionally attributed effects: astringent, stops bleeding, tonic.
North America · Herb · № 596
Rhus glabra
Traditionally attributed effects: astringent, cleansing, tonic, wound-healing, antiseptic; strengthens the digestive tract (ulcers, diarrhoea), curbs excessive secretions (urine leakage, night sweats, bleeding), may lower blood sugar, for prolapse.
North America · Herb · № 170
Grindelia camporum
The sticky herb was traditionally used for coughs, asthma and bronchitis, and externally for poison-ivy rashes. Clinical evidence is lacking.
North America · Herb · № 307
Lobelia inflata
Traditionally attributed effects: relaxing, expectorant, induces sweating, emetic, antispasmodic, anti-asthmatic.
North America · Other · № 384
Simmondsia chinensis
The liquid wax from the seeds resembles the sebum of human skin and is quickly absorbed. It is used for dry skin and hair; medical claims have been little studied.
North America · Herb · № 155
Phytolacca americana
Formerly used for swollen glands, tonsillitis and rheumatism. Because of its toxicity it is not a safe herb; there is no evidence of benefits that outweigh the risks.
Europe · Herb · № 102
Verbascum thapsus
Leaves and flowers contain mucilage and are traditionally used for irritating coughs and bronchitis; the flower oil for earache. Clinical evidence is limited.
North America · Herb · № 370
Mahonia aquifolium
Traditionally attributed effects: cleansing, purifies the blood, tonic, stimulating, supports the liver; improves appetite and digestion, promotes liver and bile secretion, purifies the blood, helps with skin problems, sudden diarrhoea and chronic constipation.
Central America and the Caribbean · Food · № 266
Zea mays
Traditionally attributed effects: diuretic, heals the urinary tract lining, tonic, soothing.
North America · Herb · № 929
Dermatophyllum secundiflorum (syn. Sophora secundiflora)
An evergreen shrub or small tree of the pea family with purple, grape-scented flowers and hard, bright red seeds. The seeds contain cytisine, a poison resembling nicotine. A single seed can be fatal.
North America · Herb · № 153
Ligusticum porteri, L. sinense en L. wallichii
The root is traditionally used for sore throats, coughs and early colds. There is virtually no clinical research.
North America · Herb · № 154
Passiflora incarnata
Used for anxiety and sleep problems. NCCIH notes some indications of an effect on anxiety but limited evidence.
North America · Herb · № 326
Mitchella repens
Traditionally attributed effects: stimulates the uterus, tonic, restorative, astringent, diuretic.
North America · Herb · № 903
Lophophora williamsii
A small, spineless, blue-green cactus with a long taproot. Contains mescaline and over thirty other alkaloids. After a few hours mescaline brings colourful visions that last up to half a day, often after a phase of nausea and vomiting.
Central America and the Caribbean · Food · № 263
Cucurbita moschata
Traditionally attributed effects: heart-warming and nourishing for body, mind and soul; good for skin and hair.