Thoothuvalai is Solanum trilobatum, a thorny climbing nightshade whose leaves go into rasam and into Siddha remedies for cough. It is not kandankathiri (Solanum virginianum), though both are armed Solanum and both get stuffed into the same “ kantakari” English paragraph.
- Botanical name
- Solanum trilobatum L.
- Family
- Solanaceae
- Tamil
- Thoothuvalai
- Hindi
- Kantakari-bheda
- Sanskrit
- Alarka
- Parts used
- Leaves, Berries, Sometimes root
- Habit
- Thorny climbing or scrambling nightshade
- Last updated
- 2026-10-30
How to recognise Thoothuvalai
Linnaeus published Solanum trilobatum. The family is Solanaceae. It is a climber or scrambler with hooked prickles, leaves that are often three-lobed (the epithet), and purple flowers like a small brinjal blossom. The berry is globose and ripens from green to dull red or purple.
Tamil thoothuvalai (also spelled thuthuvalai) is the household name. Hindi has no single honest everyday word; shop Latin and “wild brinjal” talk fill the gap. If a packet says only kantakari, ask which Solanum.
Solanum virginianum (kandankathiri) is a more erect, very prickly herb of waste ground, not this climber. Solanum surattense and S. xanthocarpum are names that usually belong to that other plant. Do not let one English sentence merge them.
Leaf collected for rasam should look like a living nightshade leaf, not like a brown powder. The prickles are a field mark and a kitchen nuisance.
A vine on a fence in a Tamil backyard is the usual picture, not a Himalayan expedition.
Ripe berries are a separate traditional article from the leaf. A churna that does not say leaf or fruit has not told you the preparation.
The hooked prickles on the stem catch clothes. That nuisance is a field mark. A spineless nightshade sold as thoothuvalai is a different plant or a lie.
Flower colour is purple, like a small brinjal. White-flowered Solanum on a fence is a reason to stop and look again before the leaf goes in a pot.
Traditional use of Thoothuvalai
Siddha and Tamil kitchen
Leaf rasam is an ordinary South Indian use. Food culture and vaithiyar decoctions share a plant and do not share a dose.
Tamil culinary and Siddha naming
Ayurveda
Some lists file this climber near kantakari-type nightshades. That filing is a tradition’s convenience. It is not a species determination.
Ayurvedic heading practice
Modern notes on Thoothuvalai
Several Indian Solanum species contain glycoalkaloids. Shared chemistry is not a reason to treat thoothuvalai and kandankathiri as one drug.
The practical modern issue is dried “kantakari” that could be any prickly Solanum the mill had that week.
Thoothuvalai safety
Leaf in an occasional rasam is the household use. Keep the berries and roots away from children.
Solanaceae can bother people who already react to other nightshades. Unidentified wild Solanum berries are a bad idea.
Pregnant people should not start root or berry preparations from a rasam story.
Ecology and sourcing
The climber is planted and also weedy. Nobody needs to strip a reserve for a rasam leaf.
Related plants
Also in Solanaceae
Questions about Thoothuvalai
Is thoothuvalai the same as kandankathiri?
No. Thoothuvalai is the climber Solanum trilobatum. Kandankathiri is usually Solanum virginianum, a more erect prickly herb.
What is the Tamil name of Solanum trilobatum?
Thoothuvalai.
Sources
- Solanum trilobatum L. — Plants of the World Online, Kew (search) (accessed 2026)
- Wikidata item Q12984480 (Solanum trilobatum)
Educational page about a plant. It is not medical advice, not a diagnosis, and not an offer to sell. Traditional use is historical. If you need care, ask a licensed clinician. Questions: hello@meevamed.com.