North America · Herb · № 168
Northern prickly ash
Zanthoxylum americanum
Bark and berries give a tingling, numbing feeling in the mouth; they were traditionally used for toothache, poor circulation and rheumatism. Clinical research is lacking.
From Ayurveda to Rongoā Māori
Communities around the world learned how plants nourish, care and heal. Here their traditions stand beside present-day use, with respect for every culture.
North America · Herb · № 168
Zanthoxylum americanum
Bark and berries give a tingling, numbing feeling in the mouth; they were traditionally used for toothache, poor circulation and rheumatism. Clinical research is lacking.
North America · Herb · № 171
Oenothera biennis
The seed oil contains gamma-linolenic acid and is sold for eczema, premenstrual symptoms and hot flushes. NCCIH reports it does not help eczema and that evidence for other conditions is insufficient.
North America · Herb · № 152
Hamamelis virginiana
Strongly astringent due to tannins. Witch hazel water and ointment are used externally for minor skin irritation, bruises and haemorrhoids; there is limited but reasonably supportive evidence.
North America · Herb · № 294
Chamaelirium luteum
Traditionally attributed effects: diuretic, uterine tonic, emetic.
North America · Herb · № 824
Hierochloe odorata
A sweet-scented grass that is burned in ceremonies.
North America · Herb · № 581
Veronicastrum virginicum
Traditionally attributed effects: laxative, stimulating, supports the liver, promotes bile; decongests liver and gallbladder, for gallbladder pain and jaundice.
North America · Herb · № 586
Cypripedium parviflorum (syn. C. pubescens)
Traditionally attributed effects: strengthens the nerves, antispasmodic, tonic, relaxing, diuretic; for menstrual pain and irregular menstruation, overstimulated nerves and insomnia from stress, pain-relieving.
North America · Herb · № 329
Aletris farinosa
Traditionally attributed effects: oestrogenic, tonic, stimulates digestion, calming.
Europe · Herb · № 86
Plantago major
The leaf is traditionally bruised and applied to insect bites, small wounds and grazes, and taken as tea for coughs. Clinical evidence is limited.
North America · Herb · № 587
Larix occidentalis
Traditionally attributed effects: stimulating, prebiotic; improves digestion and gut flora, strengthens the immune system, studied in tumours, helps with middle ear infections in children.
North America · Herb · № 190
Thuja occidentalis
Traditionally attributed effects: expels worms, astringent, antimicrobial, anti-inflammatory, stimulates muscles, antiseptic.
North America · Herb · № 332
Baptisia tinctoria
Traditionally attributed effects: antiseptic, antibacterial, fever-reducing, laxative.
North America · Herb · № 156
Prunus serotina
The dried bark was long used in cough syrups to calm irritating coughs. Modern clinical evidence is lacking.
North America · Food · № 965
Zizania palustris (en Z. aquatica)
An aquatic grass, not true rice. The long, dark grain contains more protein and fibre than white rice.
North America · Herb · № 598
Quercus alba
Traditionally attributed effects: strongly astringent; strengthens lax tissue (diarrhoea, inflamed gums, chronic nasal congestion, weak bladder), stops bleeding (nosebleeds, internal bleeding).
North America · Herb · № 823
Salvia apiana
An aromatic sage burned in ceremonies by Indigenous peoples of California.
North America · Herb · № 35
Serenoa repens
Promoted for urinary symptoms of an enlarged prostate, but NCCIH concludes it probably does not help for this.
North America · Herb · № 150
Actaea racemosa
Mainly sold for menopausal symptoms such as hot flushes. NCCIH reports that study results are mixed and there is not enough evidence that it helps.
North America · Herb · № 209
Helianthus annuus
Sunflower seeds and oil are rich in vitamin E and linoleic acid. The oil is used for dry skin; claims about scars or skin ageing have not been shown.
North America · Herb · № 576
Juglans nigra
Traditionally attributed effects: cleansing, laxative, astringent, antibacterial, antiparasitic, antifungal; cleanses and strengthens the large intestine, for skin problems, traveller's diarrhoea, sinusitis, underactive thyroid.
Featured · Central America and the Caribbean · Curanderismo
Salvia divinorum
A sage with large leaves containing salvinorin A, a very potent substance acting on the kappa opioid receptor. Brings short-lived, often intense changes in perception and the feeling of leaving the body.
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43 traditions
How communities built up and passed on their knowledge of plants, region by region.
113 recipes
Soups, teas and dishes in which herbs play a leading role.
146 formulas
The classical Chinese formulas, also listed by condition.