Genus Porphyra, also known as purple laver or nori, is a type of red algae that is commonly used in Asian cuisine. It is valued for its nutrient-rich content and umami flavor. Synonyms for the Genus Porphyra include Pyropia, which is a recent revision of the classification, and Ulva lactuca, which was used in some cultures to refer to nori before the scientific community modernized the nomenclature. Other synonyms include Aonori, which is a type of green nori, and Gim, the Korean name for nori. Genus Porphyra has also been referred to as "the sushi seaweed" due to its widespread use in the popular Japanese food.