AMERICAN THORN TREE (CRATAEGUS PUNCTATA) -
The name white haw refers to its distinctive pale (grey) bark, which is particularly noticeable in the winter landscape. The plant is a bush or small tree to about 7 meters in height and very thorny, particularly on the trunk. The flower has 3 to 5 styles and approximately 20 stamens, and the fruit has 3 to 5 nutlets. Anther colour varies from deep purple through red to pink to white, and the mature fruit colour can be deep burgundy, scarlet, yellow, or yellow with a red cheek.
The specimen below is located by the side of the Parliament Hill Fields Cafe (The Italian)