Witnessed by: TCM · Ayurveda · Unani
Water chestnut (Trapa natans), of the Lythraceae (formerly Trapaceae) family. Floating annual aquatic with a rosette of rhombic leaves on inflated petioles; native range: Ponds and slow waters of Eurasia — from Europe through India to China. Globally recognized as shringataka in Sanskrit, singhara in Hindi, ling jiao (菱角) in Chinese, singhara in Arabic, and water caltrop, water chestnut, buffalo nut, singhara nut in English. The part used is fruit (nut) and its flour. A hard two- or four-horned blackish nut holding a single white, crisp, faintly sweet starchy kernel; watery and cooling raw, floury when cooked.
In this cross-tradition database, we analyze how this substance operates across world medicine systems — tracking its traditional tastes, temperatures, tissue affinities, post-digestive effects, and planetary correspondences across Ayurveda, Unani, and Western herbalism.
WATER CHESTNUT
IDENTITY
Name
- Common
- Water chestnut
- Scientific name
- Trapa natans L.
- Family
- Lythraceae (formerly Trapaceae)
Form
- Part used
- fruit (nut) and its flour
PROPERTIES
Nature
Taste
how the plant declares itself on the tongue
- TCM
- sweet
- Ayurveda
- sweet (madhura)
- Unani
- sweet (& astringent)
Temperature
TCM: cool
Ayurveda: cooling (sheeta)
Unani: cold (& dry, 1st–2nd degree)
convergence: all {witness_count} witnesses read it cooling — a bland sweet nut that clears heat and nourishes
Affinity
where in the body it travels
Organs / channels
- TCM
- Spleen · Stomach
- Unani
- stomach · kidneys
PRACTICE
Virtue
Actions
- TCM
- strengthens the Spleen and Stomach, clears summer-heat, generates fluids and relieves thirst, dispels the after-effects of wine (cooked it tonifies, raw it clears heat)
- Ayurveda
- balya (strengthening), vrishya (aphrodisiac), grahi (astringent, checks flux), pitta-shamaka, brmhana (nourishing)
- Unani
- muqawwi (nutritive tonic), qabid (astringent), mubarrid (refrigerant), muqawwi-e-bah (aphrodisiac)
Cautions
- Contraindications
- weak, cold digestion prone to bloating (heavy and hard to digest in quantity); kapha excess
- Toxicity
- essentially a food and non-toxic; the raw plant may carry water-borne parasites (fasciolopsis) if eaten unwashed from infected ponds
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