Cyanthillium cinereum (also known as little ironweed and poovamkurunnila in malayalam) is a species of perennial plants in the sunflower family. The species is native to tropical Africa and to tropical Asia (India, Indochina, Indonesia, etc.) and has become naturalized in Australia, Mesoamerica, tropical South America, the West Indies, and the US State of Florida. Cyanthillium cinereum were use for smoke cessation in Thailand and Relief Common cold.