| |
| | Oak - Voyager, the free encyclopedia (Site not responding. Last check: 2007-09-18) |
 | | Hybrids are common in oaks, but only between species within the same section; no verified inter-section hybrids are known. |
 | | Oak Wilt, caused by the fungus Ceratocystis fagacearum (a fungus closely related to Dutch Elm Disease), is also a lethal disease of some oaks, particularly the red oaks (the white oaks can be infected but resist the disease better, and are not usually killed). |
 | | The oak is a common symbol of strength and endurance, and is the national tree of the United Kingdom, Germany and the United States. |
| www.voyager.in /Oak (944 words) |
|