[Fr., from L. .flos, flower.] The part of a plant destined to produce seed. The flower is easily seen in such plants as the rose and the buttercup in which it is large and brightly colored ; but grasses, too, and indeed all plants of a higher order have well developed flowers. In a buttercup, on the outside of each flower, are small greenish-yellow sepals, five in number, which form the calyx. Then come five large bright-yellow petals, forming what is called the corolla. Inside this, looking like little pins with yellow heads, are the stamens. In the centre of the flower are some green bodies called carpels, which together form the portion of the flower called the pistil. Every part of the flower has its use. The calyx protected the flower when it was a bud. The corolla attracts the insect to the flower. The stamens form pollen, which when placed on the pistil causes the carpels to swell and form seeds. The pollen is earned from the stamen of one flower to the pistil of another by insects. Flowers also contain nectar. It is the wind which carries the pollen of grasses and several other plants. (See Fruit.)