Identifying Common Acorn Species With Characteristics and PicturesĪfter classifying acorns into general categories, let’s look at some specific acorn species. The white oak group generally produces larger and heavier acorns. Red and White oak groupsįinally, acorns can be categorized according to the group of oak from which they originate: red and white. The tip on this group of acorns is sharper it’s the typically pointed tip we associate with acorns. The second group refers to elongated acorns, often referred to as “oblong” and “ovoid”. It’s very common for this group to have a dull tip. The first group includes round acorns, or almost round. As a rule of thumb, when it comes to shape, acorns can be categorized into two groups. ShapeĪcorns have different shapes and sizes depending on the species. They can be dark brown, light brown, red, and black. The color is also different, depending on the acorn type. The hairs can be long and matted, short and fine, and smooth Some acorn species have hairs on their cup.In some species, it can cover half of the acorn The thickness of the cup itself also differs depending on the acorn species.In North America and Europe, the cup scales are overlapped.Some acorn varieties have thin scales some have thick ones.The cup of the acorn, or hat, as some people call it, can also help to identify the species: But bigger varieties can grow up to 3 inches (7.5 cm) long.

Some can be very small, with less than 0.5 inches (1.2 cm).

Lengthĭifferent acorn species have distinct sizes.

To identify a specific acorn species, we need to look at its length, cups, color, and shape. 3 FAQs How is it possible to identify the different species of acorns?

Acorn tree types