Ipomoea (page 48): "wound in the hawthorn, all / earthly beauty my punishment / as it is yours--"
Other names: Crataegus
Family: Rosaceae
Type: Deciduous (or rarely semi-evergreen) tree
Blooming period: Spring to Summer
Sun requirement: Full sun is best.
Soil requirement: Any but very wet.
Notes: The tree blooms widely, often with white flowers -- and also often shows fall colors later in the year.
Sources: [1]