Khalimela (Dicoma anomala) — Stomach Bush

Dicoma anomala is a small perennial herb in the daisy family, growing fifteen to forty centimetres tall from a woody rootstock with a rosette of lance-shaped leaves that are densely white-woolly on the underside — a feature that makes the plant easy to identify in the field. The flower heads are small, white to pale lilac, and clustered at the tips of the stems. The plant grows in sandy and loamy soils across the highveld and bushveld, favouring open grassland, woodland margins, and disturbed ground along roadsides and field edges. It is fire-resistant, resprouting readily from its woody root after burning — a trait shared with many of the best-known medicinal plants of the African savanna.

The root is the primary medicine. A decoction of the dried root — pieces simmered slowly in water for twenty to thirty minutes — is one of the most widely prescribed traditional remedies for diarrhoea, dysentery, and stomach cramps across Zimbabwe, South Africa, and Botswana. The root contains sesquiterpene lactones, flavonoids, and tannins with demonstrated antibacterial and antidiarrhoeal activity. The astringent compounds bind the bowel, reduce inflammation in the gut lining, and exert inhibitory activity against the bacterial pathogens most commonly associated with intestinal infections. Several laboratory studies have confirmed significant antibacterial activity in root extracts of Dicoma anomala against Escherichia coli, Salmonella, and Staphylococcus aureus — validating the traditional use that healers across the grasslands have practised for generations.

Beyond its primary use for diarrhoea, khalimela root decoction is widely used for stomach ulcers and the persistent burning indigestion that traditional healers across Zimbabwe associate with a 'hot stomach' — excessive acidity, discomfort after meals, and the gnawing pain of an inflamed gut lining. The bitter sesquiterpene lactones in the root have demonstrated anti-inflammatory activity in the gastric mucosa, reducing the inflammation associated with peptic irritation and supporting the healing of the gut lining over a sustained course of treatment. Healers in parts of Limpopo and the Zimbabwe highveld prescribe a morning cup of khalimela root tea taken on an empty stomach for two to three weeks for chronic stomach complaints, always emphasising the need for dietary care alongside.

Khalimela has a strong and well-documented traditional use for intestinal worms and parasites. Root preparations taken consistently over several days create an inhospitable environment in the gut for intestinal parasites — the bitter, antiparasitic compounds in the root disrupt the life cycle of common intestinal worms including roundworm and threadworm. Traditional healers in Zimbabwe prescribe a short, measured course of root tea for children and adults presenting with signs of intestinal parasites: restlessness, poor appetite, grinding of teeth at night, and generalised abdominal discomfort. The preparation is always modest in quantity and taken for a defined course — never as a long-term or open-ended remedy.

The leaves are used externally for headaches, fever, and skin conditions. Crushed fresh leaves are applied as a poultice to the forehead for headache relief, and a warm leaf infusion applied as a wash has been used across southern Africa for slow-healing wounds and infected skin. The leaf's antimicrobial properties reduce bacterial load on the wound surface, and the anti-inflammatory compounds calm the surrounding tissue. In parts of Zimbabwe and Botswana, healers use a steam inhalation of the leaves — fresh leaves in a bowl of boiling water, inhaled under a towel — for nasal congestion, sinus pressure, and the early stages of a cold or flu, where the volatile aromatic compounds in the leaf open the airways and reduce inflammation in the nasal passages.