Taochi

The Taochi, or Taochoi were a people of Anatolia in antiquity, known mainly from Greco-Roman ethnography. The Taochoi lived in a mountainous area of the Black Sea to the current borders of Georgia, Armenia, and Turkey. Their country was adjacent to those of the Chalybians and Phasians.
While passing through their lands circa 400 BC, Xenophon and the Ten Thousand faced hostility from the Taochi. Xenophon recorded that these people were brave, valiant and self-sacrificing to such an extreme that after losing a battle, the Taochi, along with their wives and children, committed mass suicide by jumping off a cliff:
The iris species Iris taochia, native to Turkey, is named after the Taochi.