Yes, botanically speaking, a cucumber is a type of berry, specifically a pepo.
While the term "berry" is often used colloquially to refer to small, sweet fruits, the botanical definition is much more specific. A true berry develops from a single ovary of a single flower and has seeds embedded in the fleshy interior.
What makes a cucumber a pepo?
A pepo is a type of berry that possesses certain characteristics. It's a fleshy fruit with a hard, thick rind. All members of the Cucurbitaceae family, which includes cucumbers, watermelons, squash, and pumpkins, produce pepos.
Key characteristics of berries (including pepos):
- Develop from a single flower with one ovary: This is a fundamental requirement for berry classification.
- Contain seeds inside the flesh: The seeds are not in a pit, like in stone fruits.
- Have three distinct layers: The exocarp (outer skin), mesocarp (fleshy middle), and endocarp (innermost layer surrounding the seeds). In pepos, the exocarp is the hard rind.
Why the confusion?
The common understanding of "berry" differs from the botanical definition. For example, strawberries and raspberries are commonly called berries, but they are actually aggregate fruits. On the other hand, bananas, grapes, and tomatoes also fit the botanical definition of a berry, though they are not commonly referred to as such.
In summary, while you might not think of a cucumber as a berry in the everyday sense, its botanical structure confirms that it is indeed a specialized type of berry called a pepo.