Amelanchier × lamarckii, also called juneberry, serviceberry or shadbush, is a large deciduous flowering shrub or small tree in the family Rosaceae.

In spring the plant unfurls new leaves and produces star-shaped white flowers.

[3] (A. laevis and either A. arborea or A. canadensis); therefore under the rules of botanical nomenclature, it would be known as Amelanchier × lamarckii.

The Latin specific epithet honors the French naturalist Jean-Baptiste Lamarck (1744–1829).

[2] There has been some escape within North America of plants apparently secondarily derived from those European forms.