The Hawthorn, May, or Whitethorn, is too well known to require much description. Its more familiar appearance is as a hedge-forming shrub, when it is not allowed to have any natural form, but in the woodlands it becomes a round-headed tree, and when fully in flower looks like a monstrous snow-ball on a stalk. The tyro in botany can tell almost with a glance at its beautiful flowers that it is a member of the great order of Roses, and not distantly removed from the apple section of that order. The calyx-tube adheres to the ovary, and the five petals are inserted at the mouth of the calyx. The stamens are numerous; the styles one, two, or three, corresponding with the number of carpels. In the fruit these are covered by the red, fleshy coat in which the bony cells are enveloped, and which is valued as a food by birds in autumn and winter.

May or Hawthorn.
CratÆgus oxyacantha.
—RosaceÆ.—