Distribution and habitat: Through out India.

Botany:  Perennial climber, stem greenish or pale to dark purple, woody. 

• Leaves: Simple, variable, alternate, usually obovate-oblong to subpanduriform, somewhat cordate, acuminate.
• Flowers: Pale green, few flowered axillary racemes; perianth greenish white, reaching 4.5cm long, narrowed into a cylindric tube terminating in a horizontal funnel-shaped purple mouth and lip clothed with purple  tinged hairs. Anthers 6, style 6 lobed.
• Capsules: 3.8-5 cm long, oblong or globose oblong.
• Seeds: Flat, ovate, winged. 

Chemical constituents: Roots contain an alkaloid- aristolochin, iso aristolochic acid and allantoin. It also contains an essential oil (0.5%) composed of sesquiterpenoid compounds together with a trace of camphor. 

Uses:  Stimulant, emmenagogue, alexiteric 

• Root- in ulcer, cardiac debility, abdominal disorder in children, all types of poisonous bites and sting
• Leaves in cholera, intermittent fevers in children, bowel complaints
• Seeds in inflammations, biliousness, joint pains, dyspnoea in children

Propagation: Seeds