A leaf may appear to be one of the simplest structures in nature, thin, delicate and easily overlooked. At first glance, it ...

Oak trees have a surprising trick to fight back against hungry caterpillars: they simply wait. When trees are heavily ...

Galapagos daisies evolved similar jagged leaves through different genes. This shows evolution can reach the same result in ...

The amazing finding comes from a survey of 39 trees by Brent Helliker and Suzanna Richter from the University of Pennsylvania. The pair looked at both deciduous and evergreen species across the entire ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Hickory trees have a leaf with less than nine leaflets and an alternate leaf ...

For short-lived spring wildflowers such as wood anemone (Anemone quinquefolia) and Dutchman's breeches (Dicentra cucullaria), timing is everything. These fleeting plants, known as ephemerals, grow in ...

Forests don’t always wake up as soon as spring arrives. Sometimes, they hold back. A new study suggests that oak trees ...