Caesalpiniaceae · Senna

Tarwar / Tanner's Cassia

Senna auriculata

Also known as Eared Senna, Tanner's Senna, Styptic Weed

ShruboutdoorMedicinal
Habit
Shrub
Found in India
Karnataka, Tamil Nadu, Telangana & more
Flowering
Throughout the year

Plant Details

Scientific name
Senna auriculata
Genus
Senna
Habit
Shrub
Habitat
Dry deciduous forests, plains and roadsides
Habitat type
Forest, Wasteland
Distribution
India, Sri Lanka, Myanmar, cultivated in other tropics
Found in India
Karnataka, Tamil Nadu, Telangana, Andhra Pradesh, Gujarat, Maharashtra
Flowering & fruiting
Throughout the year
Conservation status
Not Evaluated (NE)

Leaf characters

Arrangement
Alternate
Entire margin leaf character
Margin
Entire
Pinnate venation leaf character
Venation
Pinnate

Typical of the Caesalpiniaceae family — a field-mark hint, not measured for this exact species.

Flower & fruit characters

Flower symmetry
Bilateral
Inflorescence
Raceme
Fruit
Legume

Typical of the Caesalpiniaceae family — flowering plants only; individual species can differ.

Local Names

Hindi
Tarwar तरवड़, avarum
Tamil
Avaram, ஆவாரை, ஆவிரை
Telugu
Tagedu, తంగేడు, తంగేడి
Kannada
ತಂಗಡಿ Tangadi, ಒಳ್ಳೆತಂಗಡಿ Olle tangadi, ಆವರಿಕೆ Aavarike
Malayalam
ആവര, Cassea Auriculata, Senna auriculata
Marathi
Tarwad तरवड, तरवड
Gujarati
આવળ
Sinhala
රණවරා

Tarwar in India

This shrub, known as Tarwar तरवड़ (Hindi), Avaram (Tamil), Tagedu (Telugu), ತಂಗಡಿ Tangadi (Kannada), ആവര (Malayalam), Tarwad तरवड (Marathi), is valued for both its bark and its flowers. Senna auriculata is found across Karnataka, Tamil Nadu, Telangana, Andhra Pradesh, Gujarat, Maharashtra, typically in dry scrub and open forest.

Uses

Its bark has historically been used in leather tanning, and its dried flowers are brewed into a caffeine-free herbal tea (avaram poo tea), especially popular in Tamil Nadu; the plant also has a history of traditional Ayurvedic use.

How to Identify Tarwar

A shrub with pinnate leaves made of many small, paired, rounded leaflets. Bright yellow flowers with a papery texture cluster at the branch tips through much of the year, followed by flat, straight pods.

Frequently Asked Questions

What is Tanner's Cassia called in different Indian languages?
Tarwar तरवड़ (Hindi); Avaram (Tamil); Tagedu (Telugu); ತಂಗಡಿ Tangadi (Kannada); ആവര (Malayalam); Tarwad तरवड (Marathi); આવળ (Gujarati).
What is avaram poo tea?
A caffeine-free herbal tea brewed from the dried yellow flowers of Senna auriculata, especially popular in Tamil Nadu.
Why was it used in tanning?
Its bark contains tannins that were traditionally used in leather processing before synthetic tanning agents became common.
Illustration representing the Caesalpiniaceae family
Botanical family

Caesalpiniaceae

Senna family

Tarwar belongs to the Caesalpiniaceae family.

The illustration represents the family — not necessarily this exact species.

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Sources: GBIF — Senna auriculata (India distribution & vernacular names) (CC BY 4.0) · Wikipedia — Senna auriculata (background/comprehension only) (CC BY-SA 4.0)