Crataegus opaca, known as the western mayhaw, is a shrub or small tree of the southern United States. It is one of several species of hawthorn with fruits known as 'mayhaws'.
Crataegus opaca can be characterized as either a small tree or large shrub, with typical height ranging from 12–36 feet (3.7–11.0 m). It has a tall and narrow trunk with a rounded crown and spiny branches. It has oval, dark green leaves and when in bloom, clusters of pink or white flowers. Its fruits are relatively large and ...