Object Details Description This once popular shade tree has become a bane to city streets because of one small beetle - the emerald ash borer. After Dutch elm disease so heavily impacted American elms ...

The common ash (Fraxinus excelsior) is one of the most important native tree species in Ireland but is threatened by the spread of ash dieback (also known as Chalara disease). The disease is caused by ...

1. Epiphytes on Quercus petraea and Fraxinus excelsior were studied in the native woodlands around Loch Sunart, western Scotland, to obtain information on community variation and habitat requirements ...

Fraxinus oxicarpa — or Raywood ash — is part of the Oleaceae family. They are mainly deciduous, fast-growing trees that exist throughout Europe, the Mediterranean coast and into western Russia.

Since 2019, scientists at Penn State's Louis W. Schatz Center for Tree Molecular Genetics focused research efforts on Oregon ash (Fraxinus latifolia), a species that plays a critical role in the ...