Dear Dr. Sunil ji,
Patalagarudi photograph you have posted is looking like Cocculus hirsutus. In futre try to capture closeup photograph and use atleast min 5 MP camera OR above.
Patalagarudi is called Doosariteega in telugu, Jal jamani, Jamtike bel in Hindi.
May be because if you extract the leaf juice it solidifies (Jamti) immediately. It is good if it is given with sugar to those who are suffering from sunstroke/hot summer. Tribals in different forest places across India are using it.
I ll try to get back with the meaning/close answer to the term PATALAGARUDI.
It has a tuberous root and the root decoction mixed with long pepper (Piper longum) is used Rheumatism.
Regards,
Dr. Venugopal.