A popular name for a large number of flowering trees which belong to the genus Crataegus. The first two species grow to about 20 ft. C. mono-gyna is the well-known hawthorn or may which flourishes almost anywhere. C. oxycantha or quick, a favourite hedging plant (though there are many far better, less prickly subjects — see HEDGE), also has several double-flowered forms in crimson, scarlet, rose and white. C. carrieri (lavallei) has extra longwhich often remain green until the end of the year. The large cherry-like fruits are most attractive. It is shorter in growth to about 15 ft. C. durobrivetisis is also less vigorous. The fruits remain after the have fallen. Increase by sown outdoors in October.