The term 'yellow flower' can refer to a variety of different species, including the BUTTERCUP (9 letters), DANDELION (9 letters), goldenrod (9 letters), DAFFODIL (8 letters), OXLIP (5 letters), and MARIGOLD (8 letters). The BUTTERCUP is a bright yellow flower with five petals that grows in meadows and pastures. The DANDELION is a yellow-flowered weed that is often considered a nuisance. Goldenrod is a tall, yellow-flowered plant that is native to North America. Daffodils are a type of narcissus with a trumpet-shaped center and six petals. Oxlips are small, yellow flowers that grow in woodlands. Marigolds are daisy-like flowers with yellow petals and a dark center.