Which of the following represents part of the buckeye family?

The horsechestnut tree, which is part of the buckeye family, belongs to the genus Aesculus. This family includes various species that are commonly known for their distinctive palmate leaves and large clusters of flowers. Horsechestnut trees produce large, spiky seed pods that house shiny seeds, often referred to as "conkers." They are also notable for their ornamental value and are widely planted in parks and along streets due to their impressive floral displays in spring.

In contrast, maple trees belong to the family Sapindaceae but are not part of the buckeye family, focusing instead on their characteristic leaf shape and the production of maple syrup. Pine trees are conifers in the family Pinaceae, which is well recognized for their needle-like leaves and cones, and birch trees belong to the family Betulaceae, distinguished by their thin, papery bark and serrated leaves. Understanding these classifications can help clarify the relationships among different tree families and species.