Flex, also known as common flax or linseed, is a flowering plant, Linum usitatissimum, in the family Linaceae. It is cultivated as a food and fiber crop in cooler regions of the world. Textiles made from Flex are known in Western countries as linen, and are traditionally used for bed sheets, underclothes, and table linen. Its oil is known as linseed oil. In addition to referring to the plant itself, the word "Flex" may refer to the unspun fibers of the Flex plant. The plant species is known only as a cultivated plant, and appears to have been domesticated just once from the wild species Linum bienne, called pale Flex. The plants called "Flex" in New Zealand are, by contrast, members of the genus