Appearance
Although many North American hawthorns are polyploid and reproduce by apomixis, this species is apparently diploid and sexual, at least throughout Ontario, Canada. The name white haw refers to its distinctive pale 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 three to five styles and approximately 20 stamens, and the fruit is a pome-type polypyrenous drupe which contains three to five pits. 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.File:Crataegus punctata flowers 1.jpg|Flowers of a white-anthered form
file:Crataegus punctata fruits.jpg|Fruit colour varies
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