These protuberances develop into the sepals, petals, stamens, and carpels. Rosaceae generally have five sepals, five petals, and many spirally arranged stamens. Flowers each up from about 180-250 pinkish stamens with elongate anthers. Each flower has four projecting stamens and two fused carpels. These verticils follow an acropetal development, giving rise to sepals, petals, stamens and carpels. They consist of five yellow petals that are curled inward, five stamens, and one pistil. The species is dioecious, with stamens and pistils on different plants. May include petaloids; prominent display of stamens & pistils. There are five stamens surrounding the stigma and style and two fused carpels. They consist of five petals, five stamens, and an entire calyx. The androecium has two stamens and three staminodes, anther dehiscence is explosive. Nectaries may develop on or in the perianth, receptacle, androecium (stamens), or gynoecium. His plan was to divide the plants by the number of stamens and pistils. What appear to be petals are the highly modified stamens or staminodes. The flowers are white, with five petals and numerous stamens.