Genus Tetragonia is a plant native to New Zealand and Australia, commonly known as kōkihi or New Zealand spinach. Its scientific name comes from the Greek words tetra, meaning "four," and gonia, meaning "angles," referring to the plant's four-angled stems. Although it has a distinct name, it is still commonly referred to as New Zealand Spinach. This plant is also known for its health benefits as it is packed with vitamins and minerals. Other synonyms for Genus Tetragonia include Tetragonia expansa, Tetragonia tetragonoides, Cook's cabbage, and Sea-spinach. These names are used interchangeably, depending on the region and language.