What an apple blossom shares with a rose
An apple tree’s flowers offer a clue to its botanical relatives. Like many members of the rose family, an apple blossom typically has five petals and a ring of numerous stamens—the pollen-producing parts. Those traits are not unique to the family, and not every relative looks alike. Botanists use combinations of features, alongside DNA comparisons, to infer which plants share an evolutionary ancestor.
One family, several kinds of fruit
The rose family’s variety becomes especially clear in its fruits. A plum develops around a single hard stone; a raspberry is made of many small fruitlets; an apple has a different structure altogether. Its crisp flesh grows largely from tissue at the base of the flower, surrounding the core, which develops from the ovary. Botanists call this kind of fruit a pome.
That range is why a family resemblance in plants can be harder to spot than one among animals: related species may evolve very different forms as they adapt to different ways of growing and spreading seeds. An apple does not need to resemble a garden rose in every detail to belong to its lineage. Its flower structure and genetic evidence place it there—even though its most familiar feature is a fruit with no rose-like appearance at all.
