Hibiscus Species. Kenaf, Brown Indian Hemp. Hibiscus Species. It is known as Pitwaa in Hindi, Taka bhendi or Khata Palanga in Oriya, Kotrum in Jharkhand Mestapat in Bengali, Amaari in Chhattisgarhi, Pandi/Pundi in Kannada, Anthur in Mizo, Sougri in Manipuri, Sankokda in Punjabi, Aamelli in Chakma, Kenaf Leaves in English, and Chin Baung in Chinese. It is a summer crop, and the hotter the place, the more sour the leaf gets.
This plant is native to south India. The leaves are sour tasting and they are used extensively in south Indian cooking. The leaves are high in Iron content and can be used as Iron supplement. You can search for "gongura recipes" in internet for tasty vegetarian recipes from south India.