Hedyotis Sithiravaraiensis (Karumthumbai or Senthumbai or Sakkaraithumba) Subject: Environment Context: Chennai-based botanists have foundNew plant species with possible medicinal properties discovered. Concept: It is a critically endangered species majorly due to unregulated commercial collection of the plant by the locals It is a critically-endangered species of the Rubiaceae family in Pakkamalai in the […]