Some 80 or more species of deciduous shrubs. Leaves alternate, simple, serrate, dentate, or lobed, usually with short petioles. Flowers white, pink, or reddish, in clusters, usually bisexual, 5 sepals, 4-5 petals, numerous stamens. Fruit usually has 2-10 oblong seeds. Native to Asia, Europe, North America, and Mexico.
Spiraea: from the Greek speiraia, a plant used for garlands.