The seed of the cilantro plant is known as coriander. Although cilantro and coriander come from the same plant, their flavors are very different and cannot be substituted for each other. Cilantro is easily confused with flat-leaf parsley in appearance, so be sure to sniff carefully when selecting cilantro. Cilantro is especially popular in Latin American and Asian dishes. It’s often used in salsas, marinades, salads, as a seasoning for rice, and in tacos and other Mexican cuisine.