Due to its ability to send out root suckers, this tree is usually found in groups. American beech leaves are observed to be marcescent, with withered leaves staying on the tree throughout the winter.

In the UK, beech trees are widespread and are the main species ... "The initial symptom is a dark staining pattern on the leaves," explained Carrie Ewing, a PhD student from Ohio State University.

The team studied leaves collected from beech trees at Yale-Myers Forest that hadn't yet been infected by the nematode, and ...