Narcissus ×medioluteus (syn. Narcissus biflorus), common names Primrose-peerless, April Beauty, Cemetery Ladies, Loving Couples, Pale Narcissus, Twin Sisters, Two-flowered Narcissus, is a flowering plant which is a naturally occurring hybrid between Narcissus poeticus and Narcissus tazetta (informally called "poetaz" hybrids). They were found initially in the West of France but have been widely grown as orn (Wikipedia)