Houttuynia cordata, also known as fish mint, fish leaf, rainbow plant, chameleon plant, heart leaf, fish wort, Chinese lizard tail, or bishop’s weed, is one of two species in the genus Houttuynia (the other being H. emeiensis). It is a flowering plant native to Japan, Korea, southern China, and Southeast Asia. It grows in moist, shady locations.
It is commonly grown as a leaf vegetable, and is used as a fresh herbal garnish. In northeastern India, it is known as ja myrdoh, is used in salads or cooked with other vegetables, and as a garnish over ethnic side dishes. The tender roots can also be ground into chutneys along with dry fish, chilies, and tamarind. It is taken raw as salad and cooked along with fish as fish curry. In Japan and Korea, its dried leaves may be used as a tea. It is also used as traditional Chinese medicine and cosmetics ingredient.